Other mistake: Brandon is wearing gloves but Phillip is not when they kill David. Afterwards, Brandon removes gloves from Phillip's hands.
Rope (1948)
1 other mistake - chronological order
Directed by: Alfred Hitchcock
Starring: James Stewart, Farley Granger, John Dall, Dick Hogan, Edith Evanson
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.
Brandon: Now look, I'm not going to get caught because of you or anyone else. Nobody is going to get in my way now.
Trivia: At first, this film seems to have only one scene and two shots, one outside and another inside. Actually, it is divided in a series of 10 minute continuous shots, 10 minutes being the maximum duration of filming possible without reloading the camera. Every 10 minutes, the camera zooms on a dark object and then cuts.