Revealing mistake: During the Mutants' escape, while they're attacking others in the Citadel some of their rubber bald caps come loose, and we can see the caps' edges over their hair/heads.
Beyond the Time Barrier (1960)
1 revealing mistake
Directed by: Edgar G. Ulmer
Starring: Arianne Ulmer, Boyd 'Red' Morgan, Darlene Tompkins, Robert Clarke, Stephen Bekassy, Vladimir Sokoloff
Genres: Sci-fi
Continuity mistake: After Major Allison's return, when he's in the OR with Dr. Richman he's lying shirtless on a gurney, but in Allison's closeup he's wearing a pajama top and there's a slatted headboard behind him - which is a shot taken from a later scene in his hospital room.
Princess Trirene: Major, I must tell you the truth, understandably not an easy thing for me to do. Everything they say about us is true. We are sick and dying. You can imagine with the envy I look upon you, Kruse, Dr. Bourman. I myself am in the first stages of mutation.