Rope (1948)

Continuity mistake: When Rupert gives ice cream to Brandon, they are besides a wall between the living room and the entrance of the house but the shot later, they are on the other side of it.

Dr Wilson

Phillip: Rupert only publishes books he likes... usually philosophy.
Janet: Oh. Small print, big words, no sales.
Brandon: Rupert's extremely radical. Do you know that he selects his books on the assumption that people not only can read but actually can think?

Trivia: This was the first film in colour directed by Alfred Hitchcock.

Dr Wilson