Continuity mistake: When Velvet and her mother are sitting and talking in the attic, her mother pours some gold coins into Velvet's lap. Velvet is sitting back on her feet, but a few seconds later, she raises up on her knees to hug her mother. The coins should go spilling everywhere, but we never see or hear them.
Factual error: At the beginning of the film, just after the credits, there is a definition of the word 'army'. It is claimed to be from the 'Encyclopaedia Brittanica', an obvious spelling error - "Brittanica" should have one T and 2 N's.
Continuity mistake: When the maid is out on the street calling a cab, the policeman shows up. The distance between them changes from close to farther away, between shots.
Factual error: As the train with Wilson aboard pulls into a town toward the end of the movie the year is 1919. Through the window of the train, looking out into the parking lot, there are two cars from the mid to late 1930s.
Revealing mistake: Several pieces of furniture, including a large sofa, fall over before the suitcase bomb actually explodes.
Continuity mistake: Dick Powell puts his gun in his left trenchcoat pocket and then 2 minutes later takes the same gun out of his right pocket.