0:00:03 > 0:00:06Series Four, Catherine Tate is back as Donna.
0:00:08 > 0:00:10Oh, my God!
0:00:11 > 0:00:15It's great to be back, yeah, it's as if I never left, actually.
0:00:17 > 0:00:21Doctor! This is all your fault. I should have stayed at home.
0:00:21 > 0:00:26MUSIC: "Ray Of Light" by Madonna # Quicker than a ray of light
0:00:26 > 0:00:30# Quicker than a ray of light
0:00:30 > 0:00:35# Quicker than a ray of light... #
0:00:35 > 0:00:37Just like old times!
0:00:51 > 0:00:55With the script for Partners In Crime complete,
0:00:55 > 0:00:59the cast and crew are gathered at the Cardiff studios for the first read-through of the series.
0:00:59 > 0:01:04Until you hear the actors you've cast reading those lines,
0:01:05 > 0:01:08it's the first time, really, that the whole thing comes to life.
0:01:08 > 0:01:12Marvellous, I'll be reading the stage directions. Always exciting.
0:01:12 > 0:01:16A lot of them in this. Exterior, Nobles' house, fast, cheeky music.
0:01:16 > 0:01:19Donna steps out, head held high on a mission.
0:01:25 > 0:01:27Donna walking along, left to right,
0:01:27 > 0:01:30the Doctor walking along right to left.
0:01:32 > 0:01:37Donna stops in the street, looks up at a tower block which is the HQ of Adipose Industries.
0:01:38 > 0:01:41The first half of the episode is basically about the fact that
0:01:41 > 0:01:44the two of them keep missing each other...
0:01:44 > 0:01:46- Does he need a Coke?- Thanks, then.
0:01:46 > 0:01:48What's that?
0:01:48 > 0:01:51'..And that Donna's been looking for the Doctor.'
0:01:54 > 0:01:56CAR HORN
0:02:10 > 0:02:12It's pretty surprising when the Doctor
0:02:12 > 0:02:14sees Donna for the first time.
0:02:14 > 0:02:16It's fairly, er, unlikely.
0:02:18 > 0:02:22'It's a great way to reintroduce the characters to each other.'
0:02:22 > 0:02:27In a moment of great peril you have this sort of dumb show...
0:02:28 > 0:02:29..and you saw that on the page.
0:02:29 > 0:02:34The Doctor looks straight ahead and Donna looks straight ahead and she sees him.
0:02:35 > 0:02:37And he sees her.
0:02:37 > 0:02:38HE MOUTHS
0:02:38 > 0:02:40- SHE WHISPERS:- Doctor.
0:02:40 > 0:02:46She does a little mime, "I came here, trouble, internet, pills, places..." THEY LAUGH
0:02:48 > 0:02:50Marvellous!
0:02:50 > 0:02:53I said to James Strong, the director, the day before,
0:02:53 > 0:02:56"Have you got any thoughts about that?
0:02:56 > 0:02:58"You know, at all?"
0:02:58 > 0:03:01And he said no.
0:03:01 > 0:03:02He said, "I'll ask Russell."
0:03:02 > 0:03:07And then the message that came back was, "See what Catherine comes up with."
0:03:07 > 0:03:10So I kind of did it a bit on the hoof, actually.
0:03:10 > 0:03:12Well as we were filming it, really.
0:03:12 > 0:03:18And just mucked about with it a bit and will be taking a career in mime a lot further.
0:03:18 > 0:03:21It's funny, Catherine's first day on the set just felt like
0:03:21 > 0:03:25she'd never been away. It was like catching up with an old mate.
0:03:27 > 0:03:34Cos its the second time I've worked with him, I don't have to curtsy every morning which was the ritual
0:03:34 > 0:03:40when I was in the Christmas Special which was a little bit much, you know, but fair enough, really.
0:03:40 > 0:03:44So now I don't have to, so that's great.
0:03:44 > 0:03:48Obviously we know Catherine Tate as a great comic actor.
0:03:48 > 0:03:51So you've got all that coming out of the script,
0:03:51 > 0:03:57because people know they are writing for her. Also the way she will turn a line will keep surprising you...
0:03:59 > 0:04:05..Then she'll surprise you again by fulfilling all the emotional moments as powerfully as she does as well.
0:04:05 > 0:04:10She seems to have a valve that taps right into her soul and into the soul of Donna.
0:04:10 > 0:04:12You're right.
0:04:12 > 0:04:14Cos he's still out there...
0:04:15 > 0:04:17..somewhere.
0:04:17 > 0:04:19And I'll find him.
0:04:19 > 0:04:23Even if I have to wait 100 years.
0:04:23 > 0:04:25I'll find him.
0:04:32 > 0:04:33Adipose Industries,
0:04:33 > 0:04:38the 21st century way to lose weight. And here it is.
0:04:38 > 0:04:43One capsule, once a day for three weeks and the fat, as they say...
0:04:43 > 0:04:44'The fat just walks away!'
0:04:44 > 0:04:47Donna calls her supernanny,
0:04:47 > 0:04:51that's where the costume came from, the glasses, the pose, everything,
0:04:51 > 0:04:54everyone said she's supernanny-come-space villain.
0:04:56 > 0:04:59- Action.- Matron Caphelia, listen to me!
0:04:59 > 0:05:02Oh, I don't think so, Doctor.
0:05:02 > 0:05:04And whatever...
0:05:04 > 0:05:06whatever I say next.
0:05:06 > 0:05:08- Really.- 'Keep rolling.'- Start again.
0:05:08 > 0:05:14- 'Do you want a reminder, are you all right?'- No, I'm fine. - 'Here we go. And...action.'
0:05:14 > 0:05:16Matron Caphelia, listen to me!
0:05:16 > 0:05:18Oh, I don't think so, Doctor.
0:05:18 > 0:05:20And if I never see you again, it will be too soon.
0:05:20 > 0:05:25Why does nobody ever listen? I'm trying to help. Can you shift the levitation beam?
0:05:25 > 0:05:26What? So you can arrest me?
0:05:26 > 0:05:31Listen, I saw the Adiposian instructions, they know it's a crime breeding on earth,
0:05:31 > 0:05:35so what's the one thing they want to get rid of? Their accomplice!
0:05:35 > 0:05:38I'm far more than that.
0:05:38 > 0:05:42I'm nanny to all these children.
0:05:42 > 0:05:47Exactly. Mum and Dad have got the kids now, they don't need the nanny any more.
0:05:47 > 0:05:49'Lights.'
0:05:49 > 0:05:52'Drop.'
0:05:52 > 0:05:55I don't think she's a baddie. If she is a baddie,
0:05:55 > 0:05:58maybe we're seeing things from a slightly different perspective,
0:05:58 > 0:06:02but I've persuaded myself that actually she's quite a nice lady.
0:06:02 > 0:06:04Back to it.
0:06:04 > 0:06:06So then, Tardis.
0:06:07 > 0:06:09Where do you want to go?
0:06:10 > 0:06:13Oh, I know exactly the place.
0:06:13 > 0:06:15Which is?
0:06:15 > 0:06:16Two-and-a-half miles that way.
0:06:19 > 0:06:23MUSIC: "Land Of A Thousand Words" by Scissor Sisters
0:06:23 > 0:06:27# Another constellation dies
0:06:29 > 0:06:36# Do what you want cos it's your own sky
0:06:36 > 0:06:39- Donna! Donna! - # Call me when The phone stops ringing... #
0:06:39 > 0:06:44Donna! Donna... it's the flying blue box!
0:06:44 > 0:06:47# I am on your good side
0:06:49 > 0:06:52- # Where it's smoldering Or freezing... #- What?!
0:06:52 > 0:06:59# It's never all that easy to decide
0:06:59 > 0:07:04# This is a land of 1000 words
0:07:06 > 0:07:13- # But it seems so few are worth... # - David, can you put that arm down?
0:07:13 > 0:07:18# ..I'll be looking after My own world
0:07:20 > 0:07:25- # You just keep on Saving the day... # - That's Donna! That's Donna!
0:07:25 > 0:07:26And that's him.
0:07:26 > 0:07:28That's him! That's him!
0:07:28 > 0:07:31That's him!
0:07:31 > 0:07:36Yeah! Go on, girl, go on, get up there!
0:07:36 > 0:07:39Hey!
0:07:41 > 0:07:45It's just the joy. of someone being able to travel off in time and space.
0:07:45 > 0:07:48To see that via a grandfather, one of my favourite things we've done.
0:07:48 > 0:07:54He doesn't resent that, he doesn't envy her, he stands there and cheers and waves her off,
0:07:54 > 0:07:56and says go get it girl, grab it.
0:07:56 > 0:07:59And do what I never did.
0:08:20 > 0:08:23Subtitles by Red Bee Media Ltd
0:08:23 > 0:08:26Email subtitling@bbc.co.uk