Marshall Thompson as Cmdr. Charles Ernest Prescott

Marla Landi as Tia Francesca

Bill Edwards as Lt. Dan Milton Prescott

Robert Ayres as Capt. Ben Richards

Carl Jaffe as Dr. Paul von Essen

Bill Nagy as Police Chief Wilson

Roger Delgado as Mexican Consul - Ramon de Guerrera

John McLaren as State Dept. Official, Harold Atkins

Spencer Teakle as Ratings Control Room

Chuck Keyser as Ratings Control Room

John Fabian as Ratings Control Room

Richard Shaw as Witney