Directed by Jorge Grau | Starring: Cristina Galbó, Ray Lovelock, Arthur Kennedy, Aldo Massasso

When a series of murders hit the remote English countryside, a detective suspects a pair of travelers when it is actually the work of the undead, jarred back to life by an experimental ultra-sonic radiation machine used by the Ministry of Agriculture to kill insects.

IMDb Let Sleeping Corpses... movie posters