Doc: Because I used it on Jennifer there wasn't enough power left to knock your son out for the full hour. Damn!
Marty: (re: USA Today) Doc, Doc, Doc, look at this, it's changing!
The newspaper is changing from "Youth Arrested" to "Gang Arrested". The picture of Marty Junior changes to one of Griff and his gang. At the Courthouse, Griff and his gang are led away by the cops. Doc looks at them through his futuristic binoculars.
Spike: Get off, go on!
Griff: I was framed!
Cut to Marty and Doc.
Doc: Why yes, yes of course! Because this hoverboard incident has now occurred, Griff goes to jail. Therefore your son won't go with him tonight and that robbery will never take place. Thus history, future history, has now been altered and this is the proof! Marty, we've succeeded, not exactly as I'd planned but no matter. Let's go get Jennifer and go home!
Marty puts the hoverboard in the DeLorean and says hi to Einstein again.
Marty: Hi Einie, hi buddy!
Marty picks up the almanac in its bag, but the book falls out and lands at Doc's feet.
Doc: What's this?
Marty: Uh, it's a souvenir...
Doc: 50 years of Sports Statistics. Hardly recreational reading material Marty.
Marty: Hey Doc, what's the harm of bringing back, er, a little info on the future? Thought maybe we could place a couple of bets.
Doc: Marty! I didn't invent the time machine for financial gain. The intent here is to gain a clear perception of humanity. Where we've been, where we're going. The pitfalls and the possibilities. The perils and the promise. Perhaps even an answer to that universal question, why?
Marty: Hey Doc, I'm all for that! What's wrong with making a few bucks on the side?
Doc: I'm going to put this in the trash!
Doc runs over to the alleyway, a moving bin is there. He's about to put the almanac in the bin when he sees a police car in the alleyway. He stops suddenly and looks in. The cops, OFFICERS REESE and FOLEY have found Jennifer!
Doc: Great Scott!
Officer Reese: McFly, Jennifer Jane Parker. 3793 Oakhurst St, Hilldale. Age 47.
Officer Foley: 47? That's a hell of a good facelift.
Cut to Marty and Doc watching.
Marty: What the hell are they doing Doc?
Doc: They used her thumbprint to assess her ID. Since her thumbprint never changes over the years they simply assume she's the Jennifer of the future.
Marty: Well, we gotta stop them!
Doc: What are we going to say, that we're time travellers? Hey, they'd have us committed.
Meanwhile the officers have been performing checks on Jennifer.
Officer Foley: She's clean, that means we take her home.
Officer Reese: Home, to Hilldale? It'll be dark by the time we get out there.
Cut to Marty and Doc.
Doc: They're taking her home, to your future home! We'll arrive shortly thereafter and get her out of there and go back to 1985.
Marty: You mean I'm going to see where I live? I'm going to see myself as an old man?
Doc: No, no, no Marty, that could resolve in a.....(Doc realises something and gives a "Huh!" groan) Great Scott! Jennifer could conceivably encounter her future self, the consequences of that could be disastrous.
Marty: Doc, what do you mean?
Doc: I foresee two possibilities. One - coming face-to-face with herself thirty years older could put her into shock and she could simply pass out. Or two - the encounter could create a time paradox, the results of which could cause a chain reaction that would unravel the very fabric of the space-time continuum and destroy the entire universe. Granted, that's the worse case scenario. The destruction might, in fact, be very localised, limited to merely our own galaxy.
Marty: (worried) Well, that's a relief.
The police car takes off and passes Marty and Doc.
Doc: Let's go, I sure hope we find Jennifer before she finds herself!
Doc looks at a sign which gives information on the skyway. It says "Skewed on Skyway C25".
Doc: Damn, the skyway's jammed, it's going to take us forever to get there. (re: Almanac) And this stays here, I didn't invent the time machine to win at gambling, I invented the time machine to travel through time!
Marty: I know, I know Doc!
Doc puts the almanac on a barrel and the two leave. Unknown to them, BIFF has been overhearing! He opens a door to see the almanac and picks it up.
Biff: So, Doc Brown invented a time machine.
The police car enters Hilldale. The signs outside say "Hilldale - The Address Of Success" but have been altered to say "The Address Of Suckers". The car lands outside a house and the officers open the door.
Officer Reese: Hilldale. Nothing but a breeding ground for tranqs, lobos and zipheads.
Officer Foley: Yeah, they ought to tear this whole place down.
The officers press Jennifer's thumb to a panel next to the front door, and it opens.
Computerised Voice: (v.o) Welcome home Jennifer.
Jennifer is beginning to wake up.