Continuity mistake: Pinkie sweeps all the glasses on top of the bar onto the floor, yet after he and his gang have gone we see broken glass on the bar top.
Continuity mistake: Mrs. Kraft is playing cards with the bellboy, resting her feet on the shelf under the table. She drops her cards on the floor, and when she gets down on the floor to pick up the cards a large cushion has appeared on the shelf where only a moment ago her feet were resting. (01:00:00)
Continuity mistake: When Robert Taylor escapes from the asylum, and is driving the second car he steals, the car is shown at least once with windshield wipers pivoting from above the windshield, then shown with the wipers pivoting from below the windshield. Clearly, these are two different cars. I think the studio borrowed wiper footage from the scene in which he is driving the first stolen car, to use at moments in the scene in which he is driving in the second car.
Continuity mistake: In the beginning of the movie, as Louise is walking, she has on regular pumps with tassels, but when she crosses the street and is standing in front of a church, she has on open-back pumps. No tassels.