The Rex Montana Story - S1-E35
Revealing mistake: When Flint follows the Indians, there's a strong wind blowing. But the two puffy clouds in the backdrop sky never move.
The Return of Roy Carter - S2-E32
Revealing mistake: When Maggie the saloon girl starts gathering the money from the floor, an equipment shadow intrudes at the left of the screen. (00:04:30)
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.
The Case of the Wayward Wife - S3-E13
Revealing mistake: Perry and Della step into an elevator but there is no line in the floor between the floor they are on and the elevator floor. It's continuous.
Revealing mistake: While Beaver checks to see if the paint's dry on the patio table, when the bee appears and flies around him, the wire is visible. (00:19:00)
Revealing mistake: During the fight against Juan Greco and his partner, Diego is replaced by a stunt double. (00:12:58)
Revealing mistake: After he's ambushed and killed in the alley, the "dead" sheriff can be seen breathing quite healthily.