1x11 - Hammer House of Horror

Charlie Willoughby tries to rape Penny, an unstable young American living in England, and in defending herself she shoots and kills him. Her boy friend, Harry, helps Penny to 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 he wants something from Penny.