Hammer House of Horror S01 E11 Visitor from the Grave

Charlie Willoughby tries to rape Penny, an unstable young American living in England, and in defending herself she shoots and kills him. Her boyfriend, Harry, helps Penny cover things up and buries Charlie's body in the woods. Then, however, Penny thinks she hears and sees Charlie, still alive - but a trickster is up to no good and wants something from Penny.