North by Northwest

25: A woman we've never seen before enters the room full of police and claims to know Roger. The police believe her. The birth of something new.

45: Roger boards a train and runs into Eve. They become aware of approaching police. She helps him escape. He watches her walk down the aisle. They dine together. Now that I'm aware.

60: They kiss in her room. She sends a note to Vandamm and we wonder if she can be trusted. There's no going back now.

-45: The auction scene. Roger provokes everyone and interrupts the bidding. He's taken away by police, escaping Vandamm's men. Discovery.

-25: He learns she's going back to Vandamm and he doesn't like it. She runs off and when he tries to stop her he's knocked unconscious. Because of his love and concern for her safety he goes off to help her and manages to save her. The final turning point.