It Takes a Thief (1968)

A Sour Note - S2-E2

Factual error: Gino commits a murder using a six-shooter with a silencer attached, and his shot doesn't make any noise. But it should have. Though it's a long-standing Hollywood cliché, a revolver with a silencer wouldn't be silent at all. Unlike automatic weapons, revolvers are open-chambered, which allows sound to escape. They can't be muffled with a silencer. (00:34:00)

Jean G

38-23-36 - S2-E24

Factual error: Penny hides the stolen microdot on her contact lens, a re-hashed spy plot (used 5 years earlier on "The Man From U.N.C.L.E.") that wouldn't work. Any foreign object attached to your contact lens would feel like a shard of glass in your eye. (00:42:00)

Jean G

The Second Time Around - S3-E11

Factual error: Wally's car phone operates just fine - without the huge exterior antenna it would have required in 1969. (00:12:50)

Jean G

To Lure a Man - S3-E13

Factual error: Mundy makes a phone call by wiring a radio speaker to the wall jack. Clever, but it wouldn't work. He might be able to hear dial tone, etc., but no one he called would be able to hear him without a microphone/sound pick-up, which the radio didn't have. (00:16:15)

Jean G