Cast
Joseph Crehan
Dr. Stuart Hunter
Herbert Heywood
Steve
Ben Hendricks Jr.
Captain Harper
Helen MacKellar
Mrs. Mary Haslett
Walter Miller
Maxwell
Dick Purcell
Trapped Draegerman (uncredited)
John J. Richardson
Jack - Pete's Co-Worker (uncredited)
Henry O'Neill
Dr. Thomas Haslett
Sam Hayes
Radio Announcer (uncredited)
Barton MacLane
Andrew Beaupre
Robert Barrat
Martin Crane
Addison Richards
John McNally
Gordon Oliver
Pete Lawson
Eddy Chandler
Driller (uncredited)
Paul Panzer
Pierre - Man Carrying Injured Suzy (uncredited)
Russ Powell
Toby - the Bartender (uncredited)
Myrtle Stedman
Nurse (uncredited)
Jean Muir
Ellen Haslett