Jack Lord as Special Agent Frank Thompson

Edmond O'Brien as The Man

Katherine Crawford as Jean

John Saxon as George Ducette

Van Johnson as Capt. Anderson

Tom Simcox as Chipps, Flight Engineer

Michael Sarrazin as Army Corporal

Ed Asner as Feldman

Malachi Throne as Bartender

Robert Pickering as Willoughby

Jan Shepard as Elizabeth Thompson

Greg Morris as Balaban, FBI Agent

Richard Carlson as Chief Pilot Bob Shea

David Lewis as Mr. Rierdon

Howard Caine as L.A. Dispatcher

John Kellogg as Dan Seaton

Bernadette Hale as Virginia

Celia Lovsky as Elderly Woman

Dee Pollock as SpeedyJet Messenger

Edward Faulkner as Reilly, Co-Pilot

Don Wilbanks as Bomb Disposal Man

Don Stewart as Charlie

Pitt Herbert as Witness at Accident

S. John Launer as Major

Robert P. Lieb as SpeedyJet Dispatcher

Noam Pitlik as Air Traffic Controller

Bert Remsen as Police Officer

Len Wayland as Agent Foster