

The discovery of a perfectly preserved caveman prompts a mad scientist to attempt a daring brain transplant.

Prof. Dexter

Prof. John Gilmore

Ape Man

Anne Gilmore

Steve Rogers

Hilda Gilmore

Tramp, Willie the Weasel

Sergeant

Ape Man
Policeman Barney (uncredited)

Policeman (uncredited)

Theater Watchman (uncredited)