A physicist finds himself drawn into an investigation to track down a spy at his research station.

An American airbase in Canada provokes resentment from the nearby residents after fallout from nuclear experiments at the base are blamed for a recent spate of disappearances. A captain from the airbase is assigned to investigate, and begins to suspect that an elderly British scientist who lives near the base and conducts research in the field of mind over matter knows more than he is letting on..

US Army Officer Dan Adams, blinded during the war, is framed for a diamond smuggling rap. Upon regaining his sight, Adams goes after the real thieves in an effort to clear his name. In order to trap the wily criminals, Adams pretends that he's still bereft of his vision.

A mad scientist captures women and feeds them to a flesh-eating tree, which in turn gives him a serum that helps bring the dead back to life.