Let Sleeping Corpses Lie

Let Sleeping Corpses Lie (, Do Not Profane the Sleep of the Dead; , Do Not Profane the Sleep of the Dead), also known as The Living Dead at Manchester Morgue and Don't Open the Window, is a 1974 Spanish-Italian science fiction zombie horror film written and directed by Jorge Grau and starring Ray Lovelock, Arthur Kennedy and Cristina Galbó. It focuses on two protagonists who are harassed by a local police investigator in the English countryside and are implicated in murders committed by zombies who have been brought to life by a farming tool designed to kill insects via ultra-sonic radiation.