Directed by: David Cronenberg
Starring: Patrick McGoohan, Jennifer O'Neill, Lawrence Dane, Stephen Lack
Revealing mistake: When Benjamin Pierce is attacked by shotgun-wielding assassins in his workshop there is a moment when he is staggering up a small ramp and you can see a wire or cord coming from the bottom of his pants leg and leading off-screen. (00:40:53)
Revealing mistake: Obvious stunt doubles replace Cameron and Kim when they run from the telephone box just before it explodes. (01:20:09)
Continuity mistake: In the head exploding scene the table gets covered in blood and brain matter, but in the next shot the table is clean. (00:13:05)
Paul Ruth: How do you feel?
Cameron: I feel... crystal clear.
Trivia: Scanners is identified as having the first known media depiction of psychic activity directly or indirectly causing nosebleed. This concept has since become widespread in movies, television, and comic books/graphic novels.