School's Out for Murder Armchair Detectives

Remember when all your school mates said they wanted to be an astronaut

or a pop star and you said you wanted to be a police detective?

Don't worry - you're not alone.

Welcome to the TV show with only one question.

Whodunnit?

Hello. This is Armchair Detectives.

15 murder mystery enthusiasts are primed and ready to solve a crime.

Our detective boffins will watch the evidence unfold

from a case set in picturesque Mortcliff,

the fictional village with a terrible reputation for murder.

We'll see the village's dynamic crime fighters sift through

all the information in today's case. There they are.

DI Knight, DC Slater, and Scene of Crime Officer Simmons.

Without further ado, let's say hello to our Armchair Detectives.

-Armchair Detectives, hello. ALL:

-Hello!

They're so cheerful, I love them.

Now only three of you play each day, so please take your armchairs,

James, Kathryn and Bola. Come on up, come on up.

Welcome, Armchair Detectives.

As you know by now, the detectives who guess the killer correctly

will win one of these - the gorgeous golden magnifying glass trophy.

-AUDIENCE:

-Ooh!

Now, you've all played twice before.

Kathryn and James have a 100% record.

What's the secret to your success, do you think, James?

I've got a really good eye for detail and I'm good at pic...

piecing everything together, and I think that's...

I don't want to mention my job too much

because I want to keep it at the end of this, so if I get it wrong...

I mean, you kind of have mentioned it so...you are.

-You're a detective.

-Yes.

-Yes.

-No, I am a detective!

Kathryn, what's the secret to your success?

When I was about 12

I was given as a present

a biography of a very famous pathologist,

and I've been really interested in pathology

-and forensic medicine since then.

-Which pathologist was it?

Sir Bernard Spilsbury.

-I've read that one, it's very interesting indeed.

-It's very good.

-Absolutely. Now, Bola.

-Hi.

-You haven't won yet.

-No.

I can't tell you how much I want you

to win a golden magnifying glass trophy today.

Have you been psyching yourself up?

Yeah. Definitely going to be taking my notes,

but I'm not going to panic last minute as much as I did

-the last two times.

-Absolutely.

Well, we're rooting for you, we're rooting for you -

all of you Armchair Detectives, good luck.

It's time for round one, the Crime Scene.

Knight and Slater have been called into Mortcliff College,

and it's not because a pupil handed their homework in late.

Notepads at the ready -

for the first time today, let's go to Mortcliff.

Bring back memories, Slater?

Yeah! I was a science luminary.

You?

Oh, my strongest subject was always poetry.

There's nothing that explores the human condition

quite like poetry, Slater.

No, you're right, sorry, sir.

Ah, Ms Webster, is it?

-Yes, hello, detectives.

-Hi.

-Hi.

How's Mr Roberts?

Not too good, I'm afraid.

Did you notice anything suspicious this morning?

In fact, yeah. When I arrived,

I thought I saw someone jumping out of a window around the south side,

at least I think I did. I can't be too sure.

It happened so quickly.

Well, if you think of anything else, do give DC Slater a call.

I can take you to the room just now.

Thank you.

Hi, anything so far?

Seems like a heart attack. No other injuries.

I'm not optimistic about prints,

there's so many staff members come in and out of this room.

Time of death?

About 9.40 am.

Victim is a Miss Emma Kean, 50 years old.

She died during a fire drill.

She came back in to get her register.

The door was broken, so they had to force entry to get to her.

She was found by a Mr Roberts.

Who scheduled the drill?

It wasn't a scheduled drill.

I think you boys need to work out who raised the alarm.

It's on my list, m'lady.

Do you know where this Mr Roberts is?

I think he's in the art room.

Thanks, Simmons. We'll let you get on with your work.

Yeah, thanks, Simmons. Get on with your work.

I could hide your body and no-one would ever find it.

Mr Roberts, I'm sorry for your loss.

Do you feel able to answer some questions right now?

Go ahead.

Can you tell us what happened this morning?

I...

Yes. I arrived at about 8.30, normal time.

Greeted pupils and teachers at the gate.

Ms Kean arrived late.

I was chatting in the staff room,

and then the fire alarm went off,

so I went outside to see what was happening,

and carried out the evacuation procedure in the playground.

And Ms Kean went back?

She went back for the register.

I went back inside with Mr Fawcett

and opened the fire alarm cabinet

and reset the alarm.

I noticed the handle on the office door

was off on both sides.

I looked through the hole and...

..and saw her.

HE SOBS

She'd just been voted Teacher of the Year.

Why?!

Luckily, we do have CCTV on the south side.

I thought you may want to have a look at this.

So it's about 9.30, that's when the fire alarm had already gone off.

She climbs in, and five minutes later...

..she climbs out the window, see?

-Can we get a copy of this?

-Yeah.

Pity we can't see her face and what she's carrying.

Oh, I can't tell you what, but I can tell you who.

Oh-ho-ho-ho-ho, this is a good one.

There's going to be a lot of suspects.

-You think it'll be just a school photo?

-Yes!

Just give me the yearbook, that's fine, we'll work from that.

What about what you've seen so far?

So I think from where she was found

there's possibly going to be quite a lot of DNA in there.

-Yeah.

-So we saw the brownies, didn't we? So..

Yes, there was a... The camera lingered on the...

-that plate of brownies.

-Yes, the camera also lingered on

-some coffee cups in the bin.

-Yep.

-And some coffee cups that were stacked up as well.

-Yep.

Suspected heart attack makes me think

maybe we're going down the route of maybe a poisoning.

-Could be, could be.

-Something to raise the heart.

Gemma Webster, wasn't it, that...

She said she'd seen somebody jump out the window on the south side.

Miss Webster, yep, mm-hmm.

So I think that's been confirmed, hasn't it, by the CCTV?

Yeah, Craig Thomas, yeah, Craig Thomas showed us the CCTV.

-And on the CCTV he kept on referring to her as "she".

-She. Yep.

-She, and that she was carrying something.

-Yep.

He can't tell us what she was carrying...

-We couldn't see her face, either.

-No, but he knows who it is.

-He knows who it is.

-Right.

I think... I think it was very striking that Mr Roberts,

that was an extraordinary state of grief, so...

-Very emotional, wasn't he? Very emotional.

-Very, very emotional.

-And he's also wearing a wedding ring, so he is married.

-Yeah.

Let me just tell you about the victim.

We're investigating the death of Ms Emma Kean, who was 50.

She was an art teacher, and married.

The cause of death is a suspected heart attack

and the time of death is approximately 9.40am.

-So..

-Well, she's an attractive woman.

-Yes.

-Married.

Could be that she was having a relationship

with another married teacher.

Possibly.

-We also know that she arrived late that day.

-Yes.

-Why was she late?

-Why was she late?

Let me put the suspects up for you

so we can talk about them a little bit more.

We've got...

Miss Gemma Webster, who's a science teacher.

Mr Ken Roberts, who's the headmaster.

And Craig Thomas, who's the caretaker.

-Now, remind me, who found the body?

-Ken Roberts.

-That was Ken Roberts.

-Yes.

-He looked through the hole.

-Yes.

But he said.. Didn't he say that the handle

-was off the door on both sides?

-Yes, the lock was off on both sides.

-Do you know, I...

-When a handle falls off a door,

-it's normally just on... just on one side, isn't it?

-Yes.

So does that make us believe that she couldn't get out?

I'm not trusting Ken at the moment.

-Yeah.

-There's something that's been missed.

-Quite.. Quite emotional, wasn't he?

-Yeah.

So let me try and help you out a bit with your first piece of evidence.

Here is a still from the CCTV shown by Craig to the detectives.

So this is what the caretaker was talking about when he said "she" -

that was his assumption - "is going through the window

"carrying something."

Well, that... That looks like a sort of printed carrier bag, doesn't it?

-Yeah.

-Does it?

They're wearing sort of school uniformy trousers.

9.30am is the timestamp.

-Yes.

-OK.

-9.30, it's the time the fire alarm went off.

-Went off.

-Yeah.

So does that person know that...

-has arranged to have the fire alarm set off so that...

-As a cover.

So that she knows that

that teacher is going to go into the office for the...

-for the register, to take out to call.

-Interesting.

It is interesting.

Let's see if we can move further forward in the investigation

with round two.

Last Movements.

Back to Mortcliff College,

where caretaker Craig has got his hands full.

Notepads at the ready, off we go.

Mr Roberts, look, I am sick of cleaning this graffiti.

We need to put an end to it.

Right. We need to find out who it is.

I know who it is. It's that new girl, Penny Kingdom.

Mr Roberts, could we have a chat about me hiring a new assistant?

My workload is bigger than everyone else's, and I can't keep up.

I'm sorry, Ms Webster, there's just no money.

There wasn't the first time you asked and there isn't now.

-I'm very sorry.

-Well, can't Ms Kean share hers?

That's not possible, and you know it's not.

Everyone's busy - not just you.

How's the planning going for the science trip?

Fine.

Hello!

Nice of you to join us, Ms Kean.

-There.

-Ah, thank you.

-I thought you might need it.

-Kind of.

Want a brownie? They're from Penny.

I think she's trying hard to make up for her behaviour.

You doing a stock-take?

Just marking art supplies.

There's been a far amount of spray paint going missing recently.

Poor Craig has spent hours scrubbing the walls this week.

FIRE ALARM RINGS

-Oh, no, I've left the register inside.

-I'll go and get it.

You shouldn't go back inside until we find out what caused the alarm.

Probably a misbehaved child - come on, that's what it usually is.

-But you don't know...

-It's fine.

Sorry, we were interrupted earlier. I've had my coffee now.

What were you saying about this graffiti artist?

It's definitely Penny Kingdom.

Only started when she arrived, and she's always in trouble.

Her and her minions. I'll be back.

Hi, can I help you?

I'm Henry Fawcett, the history sub.

Hi, I'm Mr Roberts, the head.

Sorry I'm late - trains.

No problem.

Sorry about the chaos, we're investigating the fire alarm.

False alarm, Mr Roberts.

No problem. Could you send everyone back inside?

SIREN WAILS

Hang on...what are you thinking?

So, first of all...I'm thinking Mr Roberts has lied.

-Yes.

-Because he didn't reset the fire alarm, did he?

-No.

-No, he didn't.

-He's outside. Yeah.

He delivered a drink to Ms Kean,

he left it with one sugar on the desk

while she was labelling up the spray paint.

-Spray paint's been going missing.

-Yeah.

The person that they think has been doing the spray-painting is Penny.

Yeah, so Penny gave brownies to Ms Kean to make up for her behaviour.

-Yep.

-I.. I found it quite significant

when the headmaster said rather ostentatiously,

"Oh, dear, I have forgotten the register,"

and she said, "Oh, I'll go and get it,"

and there was something about the way he did that.

We can now add Mr Henry Fawcett, the substitute teacher,

and Penny Kingdom, who we've not met yet.

So..

Don't know if anybody else picked up

-but it seems that Gemma wasn't fond of Mrs Kean.

-Yeah.

She spoke about her heavy workload.

-Mr Roberts passed it off.

-Yeah.

Let's try and move it forward.

It's time to pick your next piece of evidence.

We have the graffiti message on the wall that Craig was cleaning,

a police report on the office door barged open

before discovering the victim,

and finally, a police report on the school fire alarm box.

-Something's drawing me towards the graffiti.

-Oh, is it?

Yeah, and it's kind of one of the most obvious, I think,

to not go for, but it could be

somebody trying to set somebody else up.

Could it be a rude... A rude poem or a rude slogan

about "Miss So-and-so and Mr So-and-so are..."

Yeah, possibly.

I'm... I'm inclined to go to the office door at the moment.

Let's go for the office door.

OK, let's see the office door.

Door handle totally detached,

witness reports state door jammed closed.

Possibility of tampering not definitive.

It's not necessarily that it hasn't been tampered with,

-they just can't prove it.

-There's no proof there, is there?

It looks like the handle could have just fallen off.

Apart from the marks where probably the handle was fitted

in the first place, there doesn't appear to be any marks round the...

-the catch, does there?

-Why did Mr Roberts say

you could only see her by looking through the hole?

There's windows in the door!

ALL: Ohhh!

APPLAUSE

I didn't even notice that, James,

and I'm this close to the screen!

There's a window!

So we now know, I mean, that's two lies we've caught him in now.

-Two lies, yeah.

-Very interesting.

It's that moment, Armchair Detectives, to write down

and name your prime suspect.

Will it be Gemma, Ken,

Craig, Henry, or Penny?

It's time to find out who your prime suspects are.

James, who have you gone for?

-Ken Roberts, the headmaster.

-Why?

There's a lot of lies coming out of his mouth at the moment.

Call it a copper's nose, but I'm bit suspicious of him at the moment.

-Kathryn.

-I have gone for the same chap, Ken.

As James said, we've..

we've detected him in not one, but two lies,

and also there was something odd about his grief, it was...

There was a touch of the theatrical about it.

Yes, it was a little bit theatrical.

Bola, what do you think? Who's your prime suspect?

I've gone for Ken Roberts also.

-Full house. Full house.

-Yes.

It's probably the most emotion we've kind of seen,

but also it was... It didn't feel genuine.

Yes. So in summary, every single one of our Armchair Detectives

thinks it's Ken.

Let's see what happens now - it's on to round three,

the Police Interviews.

Knight and Slater have called in Penny and Craig for questioning.

Who's hiding secrets in this textbook case?

It's off to Mortcliff Police Station.

Further searches in the school

revealed something pretty interesting.

The victim was poisoned, an unusual chemical for a school lab.

Sodium azide.

Yeah, no, that is quite unusual, Simmons.

I did tell you I was a science boffin, sir.

Anything else?

May have something, but just need to confirm a few things.

I'll keep you in the loop.

Oh, there were loose screws in the room we found the body.

I'd say the door had been tampered with.

What were you doing on Wednesday morning around 9.15?

At school.

Whereabouts?

I was evacuating the building because of the alarm.

That's interesting, because, you see, we have CCTV pictures

showing that everyone else was rushing out of the building,

while you were actually climbing back in.

You have quite a track record for vandalism and truancy, Miss Kingdom.

Early starter, too.

No suggestion of physically violent behaviour,

but there's always a first time, I suppose.

I hurt no-one, pal.

Well, you see, I can't really take that at face value

if you continue to refuse to tell us exactly what you were doing

at the time Ms Kean was murdered.

I...

I stole some spray paint from the art department.

I wanted to do some graffiti.

Why was that?

That creep Mr Thomas is out to get me,

so I thought I'd give him something to moan about.

I knew it was Penny Kingdom doing the graffiti.

It didn't take a rocket scientist to work it out.

It started when she came to the school.

Did you threaten her?

No. I told her she was a criminal, and she is.

The graffiti she wrote appears as though it was directed at you.

What does it mean, exactly?

I have no idea.

Mr Thomas...

..we have Ms Kean's mobile phone records.

It appears that she made calls from your address

on three separate occasions over the last two weeks.

After school hours.

Can you tell us what she was doing at your house?

Well, she wanted to ask my opinion

on plans the school had for renovations.

At ten o'clock at night?

In summer, one loses track of time.

What do you think of Mr Roberts?

Do you mean do I think he killed her?

I think Mr Roberts and Ms Kean had a pretty decent relationship,

you know, seemed to get on well enough.

I don't think that's important.

I'd look at Penny. Honestly, she's a disaster,

and I think she's gone too far this time.

"In summer, one loses track of time." Oh, really, Mr Thomas?

Eh, eh? We met Penny - what do we think of her?

What I noticed initially, I thought, "Ohh!"

was the spray paint on her fingers.

Yeah, I noticed that, the blue spray paint.

Yeah, the blue spray paint.

In actual fact, she even admitted stealing it.

It was also hinted during the interviews

that the graffiti relates to Craig Thomas.

-Thomas, yeah.

-Yeah.

-So has Penny discovered

that Craig Thomas and Mrs Kean are maybe having a...?

I definitely think so, I definitely think so.

What we also found out on this video

was that she was killed by poisoning.

I do think it's through the coffee,

because coffee is featuring a lot in these videos.

There's a lot of coffee.

Let's try and help you out with some more evidence,

see if we can move this forward.

Once again, you can pick a piece of evidence from the list.

The graffiti message on the wall that Craig was cleaning,

a police report on the school fire alarm,

or the new piece of evidence,

which is the sodium azide bottle from the school lab.

I'm still curious about the graffiti, I'm going to be honest,

and the police officer didn't state that it was about Craig,

-AND Mrs Kean, he just said it was about him.

-No, about him.

-Penny referred to him in her interview as a creep.

-Exactly, yeah.

I'm interested in the fire alarm,

but I'm also interested in the sodium azide bottle,

especially when Ms Webster's the chemistry teacher.

-Oh...

-Oh, hello, James.

What do you want to see, Armchair Detectives?

Right. Based on what you've just said, the last bit,

I'm going to swing from graffiti to...

-yeah, the sodium azide.

-The sodium?

-Yes.

-The sodium azide bottle, yes?

-Yeah.

-Yeah?

-Yes.

OK, let's see the bottle.

Sodium azide is a highly toxic substance

and is poisonous if consumed.

The bottle states that the substance should be handled with extreme care.

Explodes when a small electrical current is passed through it.

Heart attack.

It's time to pick your prime suspect again.

Let's have a look at the board.

Is it Gemma, Ken,

Craig, Henry, or Penny?

Please write down your prime suspect now.

Let's see who your prime suspects are.

James, last time you went for Ken - this time?

-I've went for Ken again.

-Ken again?

Yes. There's still a lot of inconsistencies

that have not been answered yet.

Kathryn, last time you went for Ken, who have you gone for this time?

-I'm sticking with Ken.

-Sticking with Ken?

-His...

His lies, his ostentatious grief,

there's just something that I find very uneasy-making about him.

Something not right. As my mum would say, something not right.

-He's a bit shifty.

-Bola.

-Yes.

-Last time you went for Ken.

Yes. I'm sticking.

-Sticking with Ken.

-Yes.

-Still all Kens.

-Yes.

I'm going to be honest, I am curious about Ms Webster,

-that's where I'm at, but I've not had enough evidence yet.

-Yeah.

OK, to summarise, then, all of our Armchair Detectives

think that Ken is the prime suspect.

It's time now for round four - Dig Deeper.

Notepads at the ready as we head back to Mortcliff College

and to the art classroom.

That's lovely - well done.

Good girl, Penny.

Um, yes, the red, a bit more.

BELL RINGS

Thank you, everybody. Please put everything away neatly.

Penny, detention is in here this afternoon, please stay seated.

DOOR OPENS

Penny. Only you in detention today?

I guess so, sir.

What homework do you have?

Science and English.

OK, start with science, and we'll see how we go.

PHONE VIBRATES

Sir.

Honestly. What part of detention don't you understand?

Come on now, hand it over.

Now.

Sir...

Miss Webster's the best.

Today she showed us how an airbag blows up

using this deadly chemical.

It's this stuff, right,

and when it explodes it creates all this gas. It's magic.

And dangerous. We could only touch it with gloves.

You were a science teacher once, weren't you, sir?

Sir.

I know I've been really difficult,

but actually, this is the best school.

The other four I've gone to weren't nearly as good.

Right.

Thank you, Penny.

-Really?

-Really.

I'm...glad you like science.

I'm going to let you go early,

in the hope that your troubled behaviour has come to an end.

Yes, for sure. I promise you. You won't regret it, sir.

Sir,

do you really like Ms Kean like that?

Like, to have an affair with her?

I can't have an affair with my own wife, Penny.

Ohh! You've got another 15 minutes yet.

-Does Mr Roberts know you're off?

-You ought to mind your own business.

I know girls like you.

Troublemakers, vandals, criminals.

I'll get you expelled.

Is that a fact?

Watch this space. Then you'll really know what I'm capable of.

All right, Mr Roberts?

All right, Mr Thomas. Have a good evening.

Boof!

Armchair Detectives, huge things happened.

I just wanted confirmation from my colleagues.

So, do I understand that Ms Kean is actually Mrs Roberts?

Does this maybe explain why he was so upset when she died?

Yes, but why would he not say, "I'm married to her"?

-I mean, what...

-I don't know, James!

I've just got a little theory that...

Penny knew it all,

she knew that Ms Kean

was spending time with Craig...

Yeah.

..and she obviously was messaging about seeing her with Mr Roberts...

Yeah.

-He's gone through her message history on her phone...

-Yeah.

..and maybe worked out that his wife is having an affair...

..with Mr Thomas.

-APPLAUSE

-Thanks.

James.

We also know that Mr Roberts used to be a science teacher.

Yeah, now, we've been talking about her being poisoned,

she can't have ingested it.

Well, coffee...

A cup of coffee was delivered by Ken Roberts

when she was in the classroom.

-Yes.

-Yeah.

So, here are the suspects for the case, the board is now full.

That's all of your suspects.

There's still some unanswered questions with Penny.

She did threaten Craig.

Is it possible that he's been up to something untoward?

And she...

I don't know, maybe she's jealous of somebody.

So, once again, you get to pick a piece of evidence

from three choices.

There's a new item on the list.

So, the graffiti message on the wall that Craig was cleaning.

A police report on the school fire alarm box.

And a new item, which is text messages from Penny's mobile phone.

I want to see this graffiti, what is it referring to?

I know.

But...

What has she got over him?

Bola's so convinced, I...

I think I'd like to have a look at it, it might have a shade on...

-Graffiti?

-Graffiti.

We're going to take a look at the graffiti.

I did want to see the texts.

-"I know..."

-Oh, wow.

-"..what you did, Craig."

And it looks like somebody's

tried to hide what that says.

Oh, does it say something else as well?

It does, hang on.

What does it say?

The last letter on the...

has been turned into an R, A...

Oh, there's something there and I can't see it.

Hey, James, quite a good clue?

I went with it!

THEY LAUGH

Didn't take long.

Well, we're going to have to move on.

So, let's get the suspects back up again.

Gemma, Ken, Craig, Henry, Penny.

Write them down for me.

Notepads down, please.

James, last time, you went for Ken.

Yeah.

Who's your prime suspect this time?

I've stuck with Ken.

Ken. Nothing has changed your mind?

No. I've still got so many unanswered questions.

Kathryn, last time, you went for Ken.

I.. I stuck with Ken,

but I now have serious misgivings

about having done so.

-Why?

-Well, I wonder...

I don't know for certain,

but I wondered if, what you could see in...

Written against that was sodium azide.

OK. Interesting theory.

Bola, last time, you went for Ken.

-Have you stuck with Ken?

-Yes, I have.

Because?

In the morning, when she was late,

he was kind of offish with her.

-Yes.

-"Nice of you to turn up."

Why would you not, kind of, come together

or leave around the same time?

Did they not leave the same house in the morning? I'm confused.

Yes.

Where was...? Indeed, where was...?

-Where was she?

-Yeah.

The prime suspect for everyone is Ken,

lots of questions around Ken.

But it's time now for round five, the Final Clues.

Are we any closer to solving this art attack?

Notepads at the ready,

let's go back to Mortcliff.

KNOCK AT DOOR

Come in.

Oh, hello again.

Is everything OK?

Mr Thomas...

were you having an affair with Ms Kean?

No. Absolutely not.

Really?

So you didn't string her along and then call the whole thing off?

Where has this come from?

We've retrieved the last text message Ms Kean sent to you

from her mobile phone, which reads...

"I cannot believe I almost chose mediocre passion

"over the special friendship I've always had, dot, dot, dot,

"thank you for helping me see the error of my ways.

"Full stop."

The woman was a cling-on, seriously.

She didn't understand when enough was enough

but, I swear to you, I had nothing to do with her death.

Speak to Ms Webster,

she was desperate to get the deputy head teacher position,

but Mr Roberts gave it to Ms Kean,

OBVIOUSLY, who didn't really deserve it.

If anyone had a reason to wish Emma Kean dead, it was her.

Ms Webster, hello.

Hello.

I've never seen a lab so pristine.

Thank you.

You must be a huge asset to the school.

Well you would have thought so, wouldn't you?

How can I help you today?

We were wondering if we could ask you some questions

regarding Penny Kingdom.

And we'd appreciate your expert opinion.

Do you know a chemical called sodium azide?

Yes. Not many schools have it,

but I got some in for a specific experiment.

That's odd, it's out of its place.

I always keep everything in alphabetical order.

It should be sodium azide first,

then sodium bicarbonate,

sodium chloride,

then sodium hydroxide.

So orderly.

Well, OCD, really.

Me, too.

So, the sodium azide was used

and then put back in the wrong place.

Sir, I'd be extremely careful touching that,

-it can be very harmful.

-OK.

We'll need to take this away...

..as evidence.

-There's so much going on.

-I know.

Tell me, Armchair Detectives.

I mean, to work backwards...

..Miss Webster, there, seemed genuinely gobsmacked

when she opened the cupboard and saw that the sodium azide was...

missing, so I...

I'm inclined to scratch her from the runners and riders in this.

Craig seemed very angry, didn't he?

And also, he was very quick...

very, very quick to put the blame on somebody else.

Exactly.

Someone's been in that cupboard and they've took the...sodium azide.

-And put it back.

-And put it back.

And it's under lock and key.

One more piece of evidence, Armchair Detectives.

So, do you want a police report on the school fire alarm box

or the text messages from Penny's mobile phone?

-My instinct is to go for Penny's texts.

-Yep.

Because clearly, there was something that the headmaster saw in them

that made him suddenly turn into Mr Nice Guy.

I do really want to see the fire alarm report,

cos someone put...

Someone set this fire alarm off deliberately.

Let's go for Penny's texts.

OK, decision made. Let's see Penny's texts.

So...

That's it, that's what he's seen.

-He's found out...

-Yes.

..that she's with...

-Over the side with the caretaker.

-The caretaker.

And that's why he turned into Mr Nice Guy

once he started reading the...

-And let her go.

-And let her go.

And that's why Penny's put it on the...graffiti.

So, you're thinking that...

-Mr Roberts...

-Yes.

-..saw that she was on her phone, picked up the text.

-Yeah.

Obviously saw that she was talking about him and Ms Kean.

-Just after that...

-Yeah.

..you saw the caretaker, Craig Thomas,

and Ken together in the corridor,

and Ken didn't want to speak to him.

It's the final moment we've all been waiting for.

Stop.

You're about to make your accusations.

Who will get the Golden Magnifying Glass?

It's time to answer the only question that matters...

Whodunnit?

Armchair Detectives, pads down.

James, who are you accusing?

-I've stuck with Ken.

-Ken.

-Yeah.

I think he's got the motive, that he's found out that his wife

is having an affair,

that he's had the means - he used to be a science teacher,

and there was a lot of lies still unaccounted for.

Kathryn, who are you accusing?

I'm still with Ken for the same reasons,

there's unexplained lies, and also there's that convenient thing right

at the beginning where he said, "Oh, I've forgotten the register,"

so I think he's rigged something in that...

..in that room.

-Bola.

-I've stuck with Ken.

-Ken.

All three of our Armchair Detectives are accusing Ken of the crime.

Now, you didn't pick this last piece of evidence.

Alarm is activated and accessed by a key, alarm box not tampered.

It's not been tampered with, so it is someone that's got access to it,

so that rules out, like, a pupil and the teachers...

The people that had access to it is Ken Roberts and also Craig Thomas.

What really happened in today's story - School's Out for Murder?

Who killed Miss Emma Kean? Let's find out whodunnit.

How well does Craig Thomas know his periodic table?

Well...but Gemma Webster?

She's very knowledgeable on chemicals and their effects.

And who was overlooked for a well-deserved promotion, sir?

Could well be a woman.

The fire alarm was activated so Emma Kean would be trapped

inside that office. The sodium azide was already in the chemistry lab.

Is Gemma Webster an improviser or a careful planner?

Careful planner for sure, sir, takes one to know one.

Far too careful to use something from her own lab.

Penny Kingdom.

Lost child, hardened by circumstance and neglect.

That's a poetic analysis, Slater.

-Do try, sir.

-But was Penny hardened enough to kill?

No, I think if she did kill, it would be a spontaneous act.

I agree.

So we've had updates on the crime scene evidence.

It seems the office phone had been disabled.

-Had it?

-And the door handle had been removed,

meaning Ms Kean couldn't get out of the office.

And tiny crystals of sodium azide

were found in the art department bin.

How on earth am I supposed to know what my wife or any other student

dumps into a bin?

Can you imagine why anyone would add sugar to a cup of coffee

in the classroom when they could have done it in the staff room?

And if you're taking coffee to someone you know, wouldn't you

just add the sugar yourself?

Are you insinuating that I put poison in her coffee?

What a ludicrous claim.

The person you should really be talking to is Penny Kingdom -

she could have poisoned any one of us.

I don't think so. Sodium azide is a nasty poison,

but it doesn't kill instantly.

Slater knows his periodic table, as I'm sure do you,

having been a science teacher for many years.

You can't just take...

And I also believe you knew your wife was having an affair

with Craig Thomas.

He wasn't the first, either.

He probably wouldn't have been the last.

Penny Kingdom knew. She was telling the whole school.

I was a laughing stock.

The message at the bottom of this page is the last text

she sent to Craig Thomas.

It appears she realised your worth after all.

HE SOBS

Well done, Armchair Detectives - you all caught today's killer

and Bola's got her first gold magnifying glass trophy!

Oh, dear.

Armchair Detectives, how many of you got that right?

Yeah, see, I keep thinking it's too obvious and going for the wrong one.

Come back tomorrow where we'll see Knight and Slater

mix with the tweed-wearing upper class of Mortcliff

as they investigate a crime at a stunning country house.

And remember, no-one gets away with murder in Mortcliff. Goodbye.

-Well done, darling.

-Thank you.

Well done, sweetie.

Well done, darling.