Columbo: How to Dial a Murder

A big movie buff and psychologist Eric Mason learns that his late wife cheated on him with his best friend, Dr. Charles Hunter. He devises a brilliant revenge scenario. Eric trains his Dobermans, Laurel and Hardy, to attack after two commands: the first is a phone call, the second is the words 'Rosebud.' While Charles Hunter is at his house, Eric calls and asks: 'What did Orson Welles' Kane say before he died?' 'Rosebud,' Hunter replies, and the Dobermans tear him to pieces.