Henry O'Neill

Dr. Everett Colner

Morris Ankrum

Lt. Pat McKay

Arthur Space

Burton Caighn Jr.

Paul Guilfoyle

Dudley Badger

Dorothy Adams

Mrs. Mary Abbott (uncredited)

Paul Langton

Peter Selkin (uncredited)

William Tannen

McKay's Assistant (uncredited)

Charles Thompson

David Ranklin (uncredited)

John Vosper

Dr. Elton Parkson (uncredited)

Jacqueline White

Jean Smith (uncredited)