Edgar, an introverted and sexually repressed librarian, watches his neighbor Betty disrobe from across the street, only to discover she’s having an affair with his best friend Carl. Driven to a jealous rage, Edgar murders Carl and hides the corpse under the floor of his piano room. But if Carl is truly dead, how can Edgar still hear his beating heart? A grim and suspenseful interpretation of Poe’s classic tale of insanity and murder starring Laurence Payne and Adrienne Corri (Hammer’s Vampire Circus), restored from the original film elements and presented for the first time in high definition.