Also known as:- Zero Hour!
- 714 antwortet nicht
- À l'heure zéro
- En sekund från döden
- Kuoleman kynnyksellä
- La hora cero
- La hora trágica
- Ora miden
- Ora zero
- Suspense... hora cero
- Hall Bartlett
- Arthur Hailey ("Flight Into Danger")
- Hall Bartlett
- John C. Champion
- Dana Andrews ... Lt. Ted Stryker
- Linda Darnell ... Ellen Stryker
- Sterling Hayden ... Captain Martin Treleaven
- Elroy 'Crazylegs' Hirsch ... Capt. Bill Wilson, Pilot
- Geoffrey Toone ... Dr. Baird
- Jerry Paris ... Tony Decker
- Peggy King ... Stewardess Janet Turner
- Charles Quinlivan ... Harry Burdick
- Patricia Tiernan ... Mrs. Joan Wilson (as Carole Eden)
- Steve London ... First Officer Walt Stewart
- Jo Ann Wade ... Treleaven's Baby Sitter
- Raymond Ferrell ... Joey Stryker
- John Ashley ... TV Singer
- Willis Bouchey ... British Army Doctor
- Robert Stevenson ... Air Traffic Controller
- Maxine Cooper ... Sick Woman on Plane
- Mary Newton ... Mrs. Purty, Landlady
- David Thursby ... Whitmond the Argo Fan
- Will Sage ... Vancouver Radar Controller
- Noel Drayton ... Vancouver Control Man
- Will J. White ... Vancouver Policeman (as Will White)
- Fintan Meyler ... Mrs. Treleaven
- Hope Summers ... Mrs. Summers
- Larry Thor ... Vancouver Radio Dispatcher
- Richard Keith ... Station Manager
- Russell Thorson ... Vancouver Flight Dispatcher
- Arthur Hanson ... Reporter
- Roy Gordon ... Frank Graham
- Woody Chambliss ... Whitmond's Drinking Buddy
- William Conrad ... Narrator (voice)
- Duane Grey ... Plane Passenger
- S. John Launer ... Vancouver Switchboard Operator
- William H. O'Brien ... Nightclub Waiter
- Katherine Warren ... Mrs. Purdy
- John Zaremba ... Passenger With Sick Wife
