Revealing mistake: At the start of the film, where West and Cain are re-animating dead soldiers, one of them tries to kill West. So, he shoots him in the head. It's obvious that West's gun doesn't fire, and the soldier just pretends like he's been shot.
Bride of Re-Animator (1990)
1 mistake
Directed by: Brian Yuzna
Starring: Jeffrey Combs, Bruce Abbott, Claude Earl Jones
Dr. Herbert West: He's a wife-beater, Dan! Use the gun.