George Zucco

~ as ~

Lorenzo Cameron

Anne Nagel

~ as ~

Lenora Cameron

Johnny Downs

~ as ~

Tom Gregory

Glenn Strange

~ as ~

Petro

Robert Strange

~ as ~

Professor Blaine

Gordon De Main

~ as ~

Professor Fitzgerald

John Elliott

~ as ~

Professor Hatfield

Reginald Barlow

~ as ~

Professor Warwick

Sarah Padden

~ as ~

Grandmother

Mae Busch

~ as ~

Susan