And Whose Little Baby Are You? - S4-E18
Audio problem: When Diamond and his date are entering his apartment and he says, "You never know," his lips aren't moving with the words. (00:03:00)
Richard Diamond, Private Detective (1957)
1 audio problem in season 4 - chronological order
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.