Macabre

A scheming blonde plots to steal her husband's money, not by killing him, but by driving him to the brink of insanity so that, once he's institutionalized, she and his twin brother (whom she's having an affair with!) can run his esta
The film begins when a stranger arrives in town. He takes quickly to his former mistress, Denise, who is happily married to John, and has an affair with his identiske twin brother Peter. They plan together to drive John crazy. After unsuccessful attempts to blackmail the couple receive the stranger, Gert, to help them with their evil plan.