Revealing mistake: When the piano lid smashes Cary Grant's fingers, the lid obviously stops inches above his hand, even though a drink is positioned on the piano in an attempt to hide the gap.
The Awful Truth (1937)
1 revealing mistake - chronological order
Directed by: Leo McCarey
Starring: Cary Grant, Ralph Bellamy, Irene Dunne, Alexander D'Arcy
Character mistake: Throughout the film, Lucy's aunt is called "Patsy." In the final scene Lucy refers to her as "Patty."
Lucy Warriner: I wouldn't go on living with you if you were dipped in platinum. So go on, divorce me. Go on, divorce me! It'll be a pleasure.