Robert Mitchum
Jeff Cameron

Faith Domergue
Margo

Claude Rains
Mr. Lannington

Maureen O'Sullivan
Julie

Charles Kemper
Police Chief

Ralph Dumke
Klauber

Billy House
Mr. Bogardus

Harry Shannon
Dr. Maynard

Philip Van Zandt
Milo DeLong

Jack Kelly
Dr. Mullenbach

Lillian West
Mrs. Bogardus

Sherry Jackson
Girl in Iron Lung (uncredited)

Dorothy Abbott
Nurse Clerk (uncredited)

Philip Ahlm
Customs Officer (uncredited)

Carlos Albert
Customs Officer (uncredited)

Marie Allison
Girl (uncredited)

Stanley Andrews
Dr. Matthews (uncredited)

Tol Avery
Honest Ha (uncredited)

William Bailey
Man (uncredited)

Gene Barnes
Tipsy Youth (uncredited)