Stella: You know Marty, you look so familiar, do I know your mother?
Marty: Yeah, I think maybe you do.
Stella: Oh, then I wanna give her a call, I don't want her to worry about you.
Marty: (quickly) You can't, uh, (covering) that is, uh, nobody's home.
Stella: Oh.
Marty: Yet.
Stella: Oh.
Marty: Uh listen, do you know where Riverside Drive is?
Sam: It's uh, the other end of town, a block past Maple.
Marty: (to himself) A block passed Maple, that's John F Kennedy Drive.
Sam: (confused) Who the hell is John F Kennedy?
Lorraine: Mother, with Marty's parents out of town, don't you think he oughta spend the night? After all, Dad almost killed him with the car.
Stella: That's true, Marty, I think you should spend the night. I think you're our responsibility.
Marty: Well gee, I don't know.
Lorraine: And he could sleep in my room.
Marty: I gotta go, uh, I gotta go. Thanks very much, it was wonderful, you were all great. See you all later, (to himself) much later.
Marty leaves. Stella turns to her husband.
Stella: He's a very strange young man.
Sam: He's an idiot, comes from upbringing, parents were probably idiots too. Lorraine, if you ever have a kid like that, I'll disown you.
Lorraine looks at where Marty was, and smiles to herself.
Cut to 1640 Riverside Drive. It's a huge mansion! At the end of the driveway is the garage, where Doc lives in 1985. Marty knocks on the door. DOC opens it. He's got something on his head - one of his inventions. There's also a plaster on his forehead as a result of the bruise he had after falling off his toilet.
Marty: Doc?
Doc: Don't say a word.
Doc ushers Marty inside and connects the invention to him.
Marty: Doc.
Doc: I don't wanna know your name. I don't wanna know anything about you.
Marty: Listen, Doc.
Doc: Quiet.
Marty: Doc, Doc, it's me, Marty.
Doc: Don't tell me anything.
Marty: Doc, you gotta help...
Doc: Quiet, quiet. I'm gonna read your thoughts. Let's see now, you've come from a great distance?
Marty: Yeah, exactly.
Doc: Don't tell me! Uh, you want me to buy a subscription to the Saturday Evening Post?
Marty: No.
Doc: Not a word, not a word, not a word now. Quiet, uh, donations, you want me to make a donation to the coast guard youth auxiliary?
Marty: Doc, I'm from the future. I came here in a time machine that you invented. Now, I need your help to get back to the year 1985.
Doc is astounded!
Doc: My God, do you know what this means? It means that this damn thing doesn't work at all!
Doc takes his mind reading invention off and puts it away.
Marty: Doc, you gotta help me. You're the only one who knows how your time machine works.
Doc: (muttering) Time machine, I haven't invented any time machine.
Marty: OK, All right, I'll prove it to you.
Marty gets out his wallet and shows it to Doc.
Marty: Look at my driver's license, expires 1987. Look at my birthday, for crying out loud. I haven't even been born yet! And, look at this picture, my brother, my sister, and me.
Marty shows Doc a picture of him, Dave and Linda. Linda is wearing a class of '84 sweatshirt. The top of Dave's head is also missing.
Marty: Look at the sweatshirt, Doc, class of 1984!
Doc: Pretty mediocre photographic fakery, they cut off your brother's hair.
Marty: I'm telling the truth, Doc, you gotta believe me.