Continuity mistake: When John is holding the groceries in the hallway and drops them, the items and bag fall to his right. In the next shot, the items and bag are all the way to his left.
Continuity mistake: Tomas Milian jump balconies at night. Then he sees the murder and escapes from the hotel room. Next he drives the car and all of a sudden it's day. (00:32:20 - 00:35:05)