The Wild Wild West (1965)

The Night of the Murderous Spring - S1-E27

Revealing mistake: Kitten bends apart the cell bars, allowing West and Gordon to escape. But when they brush against it on the way out, one of the "iron" bars gives, flexing like the rubber that it probably is. (00:40:30)

The Night of the Murderous Spring - S1-E27

Continuity mistake: In the scene after the opening credits, West's hair is brushed back from his right side. It stays that way for the rest of the scene - as he is shaving, after he is drugged, as he is shooting at Dr. Loveless, as he looks out the window at the fallen Loveless, and as he runs out of hotel looking for Loveless. While West is still outside, Gordon arrives, and West's hair looks as if has gel in it when he is talking with Gordon. After the first freeze frame, West's hair goes back to the non-gel look.

The Night of the Murderous Spring - S1-E27

Continuity mistake: When Dr. Loveless falls from the sill of the double window, the right half of the frame is open (the camera view being from the outside looking in). When West rushes outside to find the "body" missing, the right frame has closed itself and the left is now open. (00:08:40)