Continuity mistake: The Mexican police pull a submerged car from the water with a crane. In the full shot (stock footage), the car emerging is upright (rooftop above, wheels underneath). But in the very next shot of Diamond and the cops next to the retrieved car, it's suddenly upside down with its wheels in the air.
Richard Diamond, Private Detective (1957)
1 continuity mistake in Matador Murder
Starring: David Janssen
Visible crew/equipment: Diamond parks outside the apartment house, and when he opens the car door, it mirrors several stage lights and reflectors.