Don Ameche guest stars as Harry Whitehead, a retired magician whose protégé Mark Santini drowns while performing Whitehead's famous underwater-escape trick on a live TV special. Quincy (Jack Klugman) investigates the tragedy and unearths evidence of a possible murder scheme--while the elderly Whitehead prepares to perform the same stunt on another nationwide broadcast. This Columbo-style episode was originally scheduled to air on September 28, 1978. ~ Hal Erickson, Rovi