Adele Mara

Belinda Prentice

Mark Roberts

William Foresman III (as Robert Scott)

Lorna Gray

Judith Foresman (as Adrian Booth)

Robert Armstrong

Insp. Prentice

William Haade

Iggy Broty

Bob Steele

Chicago

Harry Shannon

Severance

Charles Evans

Jonathan Lowell

Joyce Compton

Emmy

Russell Hicks

Col. Bentry

Mary Gordon

Housekeeper

Paul E. Burns

Professor Ordson

Colin Campbell

Doctor

Edward Gargan

Big Mac

Patricia Knox

Waitress

Ralph Brooks

Medical Examiner

George Davis

Arnold

Franklyn Farnum

Restaurant Patron

Sam Harris

Restaurant Patron

Larry Steers

Headwaiter