Fatal Cargo - S4-E7
Revealing mistake: The seam on the back of the gorilla costume is visible as he attacks the doctor's campsite.
Voyage to the Bottom of the Sea (1964)
1 revealing mistake in season 4 - chronological order
Starring: Richard Basehart, David Hedison, Del Monroe, Robert Dowdell
Continuity mistake: The shot from the rear of Kowalski and Nelson shows Kowalski holding the scanner. The next scene Nelson asks Kowalski what is on the scanner and then tells Kowalski to pick it up.