The Night of the Watery Death - S2-E9
Revealing mistake: When the Marquis meets West at the door, the landscape behind him has a give-away flaw: there are prominent wrinkles visible in the cloth backdrop "sky." (00:31:20)
The Wild Wild West (1965)
1 revealing mistake in The Night of the Watery Death - chronological order
Starring: Robert Conrad, Dick Cangey, Ross Martin, Whitey Hughes
The Night Dr. Loveless Died - S3-E4
Continuity mistake: In the opening scene, a cowboy sitting atop the balcony above Big Brad's Bar gets up and approaches the balcony's edge twice.
The Night of the Infernal Machine - S2-E14
Trivia: West collides with the cook and sends him sprawling face-down in a huge platter of gelatin. Before racing off again, West quips, "Sorry about that, chef!" This was a winking homage to the 60s spy comedy Get Smart and its bumbling hero Maxwell Smart's famous catch-phrase, "Sorry about that, Chief!" (00:47:30)