Jean Muir

Ellen Haslett

Barton MacLane

Andrew Beaupre

Henry O'Neill

Dr. Thomas Haslett

Robert Barrat

Martin Crane

Addison Richards

John McNally

Gordon Oliver

Pete Lawson

Joseph Crehan

Dr. Stuart Hunter

Priscilla Lyon

Suzanne Haslett

Walter Miller

Maxwell

Herbert Heywood

Steve

Eddy Chandler

Driller (uncredited)

Neal Dodd

Priest (uncredited)

Sam Hayes

Radio Announcer (uncredited)

Henry Otho

Gene - Rescue Worker (uncredited)

Paul Panzer

Pierre - Man Carrying Injured Suzy (uncredited)

Russ Powell

Toby - the Bartender (uncredited)

Dick Purcell

Trapped Draegerman (uncredited)

John J. Richardson

Jack - Pete's Co-Worker (uncredited)

Myrtle Stedman

Nurse (uncredited)