[last lines]
Norman Bates: [about her bumper] What happened?
Norma Louise Bates: I knocked over the Lee Berman Memorial Bypass sign with my car.
Norman Bates: On purpose?
Norma Louise Bates: Of course, on purpose. What do you think, I bump into signs by accident?
Norman Bates: What's going on, huh? Why are you all dressed up? Why are you dirty?
Norma Louise Bates: Because I went to a party, and then and then I decided to leave. It doesn't matter.
Norman Bates: What party?
Norma Louise Bates: [hugs him and begins to cry] It doesn't matter.
Norman Bates: You've been through a lot, mother.
Norma Louise Bates: No, it was just a bad party.
Norman Bates: No, I mean, in the last two years. I'm a little worried about you.
Norma Louise Bates: You're worried about me?
Norman Bates: You just... you seem a little different lately. Stop worrying.
Norma Louise Bates: [they start up the stairs together] It's all gonna be good, Mother. You'll see.