Continuity mistake: When Diamond drags the bad guy out of the water, the hunting dog that's been sitting on the dock barking at them disappears between takes.
Richard Diamond, Private Detective (1957)
1 continuity mistake in season 1 - chronological order
Starring: David Janssen
Revealing mistake: During the fistfight at the end, David Janssen's stunt double's face is visible several times. (00:23:30)