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
Revealing mistake: The car that goes over the cliff is at least ten years older than the car it's supposed to be - the 1957 Plymouth Fury that Diamond was driving. It's obviously old 1940s stock footage.