Revealing mistake: When the neo-nazis burst into Kohler's apartment, they stab him and he slides down with his back against the wall. While Mengele picks up the phone, you can see the 'dead' Kohler blink in the background.
The Boys from Brazil (1978)
1 mistake
Directed by: Franklin J. Schaffner
Starring: Gregory Peck, James Mason, Laurence Olivier, Lilli Palmer
Professor Bruckner: He was nothing but a sadist, really.
Ezra Lieberman: A sadist with an M.D. and a Ph.D.
Professor Bruckner: Well, some people would say the perfect definition of a scientist.
Trivia: In this film Gregory Peck is attacked by large vicious dogs, dogs that can be trained to attack and kill; and in the film "The Omen", again Gregory Peck is attacked by very (or the same) vicious dogs.