Visible crew/equipment: When Steed and Lord Melford find the lift out of order, shadows of the boom rigging and microphone make two separate appearances on the wall above their heads.
The Avengers (1961)
1 visible crew/equipment mistake in Death's Door - chronological order
Starring: Patrick Macnee
Factual error: The bad guys are supposedly auctioning off the stolen Mona Lisa. But they and their prospective buyers aren't very art savvy. The painting is more than twice the size of Da Vinci's actual masterpiece. (00:44:50)