0:00:02 > 0:00:05My name is Agent Olive and this is my partner, Agent Otto.
0:00:05 > 0:00:07This is my lucky pencil.
0:00:07 > 0:00:09But back to Otto and me.
0:00:09 > 0:00:12We work for an organisation run by kids that investigates
0:00:12 > 0:00:17anything strange, weird and especially odd.
0:00:17 > 0:00:19Our job is to put things right again.
0:00:26 > 0:00:27Who do we work for?
0:00:27 > 0:00:28We work for...
0:00:35 > 0:00:38So, this guy walks in and he's like...
0:00:38 > 0:00:42"Hi, I'd like to sign out a book, please."
0:00:42 > 0:00:45So then I say, "What do I look like, a potato?"
0:00:45 > 0:00:46THEY LAUGH
0:00:46 > 0:00:47POTATO!
0:00:52 > 0:00:55When did the four of them become such great friends?
0:00:55 > 0:00:58When Oren and Olaf saved the library.
0:00:58 > 0:01:00- They saved the library?- Yeah.
0:01:00 > 0:01:01Wait.
0:01:02 > 0:01:05I know a story you don't?! I can't believe it.
0:01:05 > 0:01:08- Normally you're the one... - Otto, can you tell me the story?
0:01:08 > 0:01:09Sure.
0:01:09 > 0:01:13It started off like most cases do, in Ms O's office.
0:01:13 > 0:01:15BOTH: Something very odd has happened.
0:01:15 > 0:01:17Hey, that's my line.
0:01:17 > 0:01:18SHEEPISH APOLOGIES
0:01:18 > 0:01:22As you all know, this is what the library normally looks like.
0:01:25 > 0:01:27- Yeah.- It's very nice.- Nice.
0:01:27 > 0:01:28But...
0:01:28 > 0:01:30This is what it looks like now.
0:01:33 > 0:01:34Yay, flying books!
0:01:34 > 0:01:37This isn't a yay situation, Olaf.
0:01:37 > 0:01:38Boo.
0:01:38 > 0:01:39- Better.- Hang on.
0:01:39 > 0:01:41Not all the books are flying.
0:01:41 > 0:01:43Some of them are still on the shelves.
0:01:43 > 0:01:45We have to go the library to collect more evidence.
0:01:45 > 0:01:47Well, let us know how it goes.
0:01:47 > 0:01:51Yeah, we have a badminton game this afternoon, so, kind of busy.
0:01:51 > 0:01:54- Yeah, ha-ha. - BOTH: Badminton!
0:01:54 > 0:01:56You both have to come with us.
0:01:56 > 0:01:58Fine, but we're bringing our rackets.
0:02:01 > 0:02:03JACKALOPE CHATTERS
0:02:04 > 0:02:07OLAF HOWLS
0:02:07 > 0:02:08I'm upset too, Olaf.
0:02:08 > 0:02:11Actually, he was asking if the library has any security cameras.
0:02:11 > 0:02:13You know, to review the tapes from this morning,
0:02:13 > 0:02:17- see if there's anything unusual. - Man, I really misread that howl.
0:02:17 > 0:02:21There's a room with security cameras at the far end of the library.
0:02:21 > 0:02:24All right. Here's the plan. We're going to open the doors...
0:02:24 > 0:02:26AAAAAAAAAAAAAAHHHHHHHH!
0:02:27 > 0:02:28We're going to follow Olaf.
0:02:28 > 0:02:30RAAAAAAAAAAAAAA!
0:02:31 > 0:02:33Run, the books are gaining on us!
0:02:33 > 0:02:35Come on, run!
0:02:36 > 0:02:38Security room to the left.
0:02:42 > 0:02:45- We made it. - Ow, I got a paper cut.- Ah!
0:02:45 > 0:02:47BOOKS POUND AT DOOR
0:02:47 > 0:02:50Here are the security camera monitors.
0:02:50 > 0:02:52I'll cue up all the footage from this morning.
0:02:52 > 0:02:54JACKALOPE MOOS
0:02:55 > 0:02:57These three villains visited the library this morning -
0:02:57 > 0:02:59Double Dave... THEY GASP
0:02:59 > 0:03:01..Tammy Tenspot... THEY GASP
0:03:01 > 0:03:03..and Even Steven. THEY GASP
0:03:03 > 0:03:06This would go a lot faster if you save your gasps until the end.
0:03:06 > 0:03:08- Oh, yeah.- Yeah, I can see that. - Save my voice.
0:03:08 > 0:03:10Double Dave likes doubling numbers.
0:03:10 > 0:03:13So, if we start with 2 then double it, you get 4.
0:03:13 > 0:03:15Double that, you get 8.
0:03:15 > 0:03:17Tammy Tenspot.
0:03:17 > 0:03:18She likes to count by tens.
0:03:18 > 0:03:2110, 20, 30, 40.
0:03:21 > 0:03:24And Even Steven. He's only into even numbers.
0:03:24 > 0:03:27Which is any number that can be divided by two or in half.
0:03:27 > 0:03:30To fully illustrate this concept,
0:03:30 > 0:03:33these four security monitors are an example of an even number.
0:03:33 > 0:03:36Two here, two here.
0:03:36 > 0:03:37Four divided in half.
0:03:37 > 0:03:39- Oh.- Mmm.
0:03:39 > 0:03:40Now you can gasp.
0:03:40 > 0:03:43THEY GASP
0:03:43 > 0:03:45Um, so....
0:03:45 > 0:03:46Well, which of them did it?
0:03:46 > 0:03:49Well, each villain has a thing for numbers.
0:03:49 > 0:03:53And every book in the library has a number on the spine.
0:03:53 > 0:03:56- Yeah, that's how I organise them on the shelves.- Yep.
0:03:56 > 0:03:58If we catch some of the flying books,
0:03:58 > 0:04:01maybe the numbers can help us find out which villain did it.
0:04:01 > 0:04:03Hey.
0:04:03 > 0:04:07Oh, uh, with-wait. When you say, "Catch some of the flying books,"
0:04:07 > 0:04:08you mean with our hands?
0:04:08 > 0:04:10I wouldn't use your feet.
0:04:10 > 0:04:11Ha, that's Olaf's thing.
0:04:11 > 0:04:13Yay!
0:04:13 > 0:04:14ELECTRIC SQUEAL
0:04:16 > 0:04:19GRUNTING
0:04:20 > 0:04:21I got one!
0:04:21 > 0:04:24Ooh, uh! Ah! Me too.
0:04:24 > 0:04:25- Me three.- Me four.
0:04:26 > 0:04:29Let's head back to the security office.
0:04:33 > 0:04:35My book has the number 10!
0:04:35 > 0:04:36Mine has 40!
0:04:36 > 0:04:38- I got 80.- 20.
0:04:38 > 0:04:40Let's put these on a number line.
0:04:40 > 0:04:42Here are the four books we caught.
0:04:43 > 0:04:45Ugh, if only we could find a pattern.
0:04:45 > 0:04:47- Doubling.- What?
0:04:47 > 0:04:5110 + 10 = 20, 20 + 20 = 40, 40 + 40 = 80.
0:04:51 > 0:04:53The numbers are doubled.
0:04:53 > 0:04:54Nice work, Olaf.
0:04:54 > 0:04:57Must be the work of Double Dave.
0:04:57 > 0:05:00Now we can set our Flying Bookinator to the right setting and
0:05:00 > 0:05:01blast the books.
0:05:01 > 0:05:02Yay!
0:05:15 > 0:05:18Time to write this story an ending.
0:05:18 > 0:05:20Uh-oh. Now they're mad!
0:05:20 > 0:05:21We need to run!
0:05:26 > 0:05:28- What happened?- I don't know.
0:05:28 > 0:05:29You said it was doubling.
0:05:29 > 0:05:31Ssh, ssh, ssh! PAGES FLUTTER
0:05:31 > 0:05:33We're not alone in here.
0:05:33 > 0:05:35Olaf, turn around.
0:05:39 > 0:05:41THEY SCREAM
0:05:41 > 0:05:45- Check the number! - It's number 30!
0:05:45 > 0:05:46OK.
0:05:47 > 0:05:51Now we have 10, 20, 30, 40 and 80.
0:05:52 > 0:05:53It can't be a doubling pattern.
0:05:53 > 0:05:57Because 10 + 10 = 20 but 20 + 20 = 40, not 30.
0:05:57 > 0:05:58Wait a minute.
0:05:58 > 0:06:01It's counting up by tens.
0:06:01 > 0:06:0510, 20, 30, 40. It must be Tammy Tenspot.
0:06:05 > 0:06:09But it could also be Even Steven.
0:06:09 > 0:06:11OK, I'm confused.
0:06:11 > 0:06:16Check it out. 10, 20, 30, 40 and 80 are all even numbers.
0:06:16 > 0:06:17They all have zeroes at the end of them,
0:06:17 > 0:06:21which means they can all be divided by two or cut in half.
0:06:21 > 0:06:22What do we do now?
0:06:22 > 0:06:25We head back out there and we try two options.
0:06:25 > 0:06:29First, we blast the books for tens and, if that doesn't work,
0:06:29 > 0:06:31we blast the books for even numbers.
0:06:31 > 0:06:33OLAF HOWLS
0:06:33 > 0:06:34OK, I got this one.
0:06:34 > 0:06:38- OK, Olaf is thirsty.- He's thirsty. You know how to do that.- I do.
0:06:38 > 0:06:41- Yeah, not even close.- Oh.
0:06:41 > 0:06:44Olaf's worried that, if the books are flying too fast,
0:06:44 > 0:06:45we won't be able to try both options.
0:06:45 > 0:06:46Ooh.
0:06:46 > 0:06:48Well, is he right?
0:06:48 > 0:06:49There's only one way to find out.
0:06:51 > 0:06:53Flying Bookinator set for tens.
0:06:53 > 0:06:56Time to end this chapter for good!
0:06:56 > 0:06:57Yay!
0:06:57 > 0:06:59- They're still flying at us.- Boo.
0:06:59 > 0:07:01Flying Bookinator set for even numbers.
0:07:03 > 0:07:04Uh-oh.
0:07:04 > 0:07:06OREN SQUEALS
0:07:11 > 0:07:13- What happened? - I don't know.
0:07:13 > 0:07:15I thought for sure it would be one of those three villains.
0:07:15 > 0:07:17Maybe we were wrong.
0:07:17 > 0:07:18Or maybe we didn't see everyone.
0:07:18 > 0:07:20Huh?
0:07:20 > 0:07:21Look over here.
0:07:21 > 0:07:23See that elbow? Someone else was in the library.
0:07:23 > 0:07:25Hey! I don't recognise that elbow.
0:07:25 > 0:07:27And I'm usually very good with elbows.
0:07:27 > 0:07:30I bet you could see the rest of that person if you checked the
0:07:30 > 0:07:32camera in our... BOTH: Other security office!
0:07:32 > 0:07:36How many security cameras do you need for a library?
0:07:36 > 0:07:39Uh, we take the safety of our books very seriously.
0:07:39 > 0:07:41THEY MUTTER
0:07:41 > 0:07:42Fine, let's go, come on.
0:07:42 > 0:07:46NO! The other security office is on the other side of the library.
0:07:46 > 0:07:48- We'll never make it! - Yes, we will.
0:07:48 > 0:07:51We're going to sneak past the books without them seeing us.
0:07:51 > 0:07:53How?
0:07:53 > 0:07:54I have an idea.
0:07:57 > 0:08:00WHISPERING: Oren. You sure this is going to work?
0:08:02 > 0:08:05I'm not Oren, I am a book.
0:08:05 > 0:08:07What? What happened to Oren?
0:08:07 > 0:08:09- Just blend in. - Oh.
0:08:09 > 0:08:11We should've used magazines.
0:08:12 > 0:08:13Oh.
0:08:13 > 0:08:15They're getting suspicious.
0:08:15 > 0:08:17I think they smell my paper cut.
0:08:17 > 0:08:20Ssh! They're on to us.
0:08:23 > 0:08:24RUN!
0:08:24 > 0:08:26MR FONTS SCREAMS
0:08:26 > 0:08:29Frieda Fiver! That's whose elbow it was.
0:08:29 > 0:08:31Frieda likes to count by fives.
0:08:31 > 0:08:34But how does our number pattern connect with counting by five?
0:08:34 > 0:08:37If you count by five you would still get all the numbers on this line.
0:08:37 > 0:08:38Start at five.
0:08:38 > 0:08:405 + 5 = 10.
0:08:40 > 0:08:44- 5 more is 15, another 5 makes 20.- Oh.
0:08:44 > 0:08:46None of the books we've collected so far has any 5, 15,
0:08:46 > 0:08:4725 or even 35 for that matter.
0:08:47 > 0:08:50I mean, if you're going to count by fives, right?
0:08:50 > 0:08:52Well, I'm sure they're flying around here somewhere.
0:08:52 > 0:08:54But how can we be sure?!
0:08:54 > 0:08:56Oh, well, that clears it up right there.
0:08:56 > 0:09:00Rise, books, rise! Rise!
0:09:00 > 0:09:01SHE CACKLES
0:09:01 > 0:09:02Yeah, OK, it was her.
0:09:02 > 0:09:05Well, case closed. Let's go zap some books.
0:09:05 > 0:09:07Where's the Flying Bookinator?
0:09:07 > 0:09:09Uh-oh.
0:09:09 > 0:09:10Oh, no!
0:09:10 > 0:09:13It must have fallen from my pocket when I was running.
0:09:13 > 0:09:15Don't we kind of need that thing?
0:09:15 > 0:09:18Yes, which is why Olaf and I are going after it.
0:09:18 > 0:09:20Uh, can you two help us fight off all those books?
0:09:20 > 0:09:23- Yes!- No. - No?- Oh, well, yeah, sure.
0:09:23 > 0:09:24You know, if we have to.
0:09:24 > 0:09:26Last resort, back against the wall.
0:09:31 > 0:09:33- Everybody ready? - Ready!- Ready!
0:09:33 > 0:09:35- On the count of seven.- Huh?
0:09:35 > 0:09:36Onetwothreefourfivesixseven!
0:09:36 > 0:09:37Ah!
0:09:37 > 0:09:39Raaraaahhh!
0:09:41 > 0:09:43Setting the Flying Bookinator to Frieda Fiver.
0:09:43 > 0:09:45We can't hold them off much longer!
0:09:50 > 0:09:53THEY CHEER
0:09:53 > 0:09:55- Oh, Mr Fonts, you were right.- Huh?
0:09:55 > 0:09:58- Those books were hard to put down. - I never said that.
0:09:58 > 0:10:01It would have been cooler if you did.
0:10:01 > 0:10:04You know what? These books are really hard to stop reading.
0:10:06 > 0:10:08And that's how Oren and Olaf saved the library.
0:10:08 > 0:10:10Otto, that was us.
0:10:10 > 0:10:11What?
0:10:11 > 0:10:15That whole case, we solved it, not Oren and Olaf.
0:10:15 > 0:10:17Remember?
0:10:17 > 0:10:19No matter what happens, I will always remember this moment.
0:10:19 > 0:10:21RUN!
0:10:25 > 0:10:27Oh, yeah.
0:10:27 > 0:10:30It was kind of weird how you kept howling so much.
0:10:30 > 0:10:34So, why are Mr Fonts and Dustin such good friends with Oren and Olaf?
0:10:34 > 0:10:36Olaf is my nephew.
0:10:36 > 0:10:38- Ohhh!- Ohhh!
0:10:38 > 0:10:41What do you say, Mr Fonts? You want to play some badminton?
0:10:41 > 0:10:42- Yay!- Haaaa!
0:10:42 > 0:10:44MR FONTS HOWLS
0:10:44 > 0:10:48OK. But have I ever told you the story where Oren and Olaf helped
0:10:48 > 0:10:50Santa deliver presents?
0:10:50 > 0:10:52- That was us again. - Got turned into puppets?
0:10:52 > 0:10:54Still us.
0:10:54 > 0:10:56How about the time that Olaf started shrinking
0:10:56 > 0:10:58and I got the growing potato?
0:10:58 > 0:10:59Seriously?!