Ivan Igor
Charlotte Duncan
Florence
Jim
Ralph Burton
George Winton
Joe Worth
Dr. Rasmussen
Mr. Galatalin
Prof. Darcy
Detective (as Thomas Jackson)
Police Captain
Hugo
Joan Gale
Janitor (uncredited)
Winton's Valet (uncredited)
Museum Visitor (uncredited)
Ambrose (uncredited)
Reporter (uncredited)
Autopsy Surgeon's Assistant (uncredited)
Autopsy Surgeon (uncredited)
Detective (uncredited)
Morgue Attendant (uncredited)
Policeman (uncredited)
Igor's Assistant (uncredited)
Desk Sergeant (uncredited)
Copy Editor (uncredited)
Wax Figure of Queen Victoria (uncredited)
Policeman in Prison (uncredited)
Joe (uncredited)
Plainclothesman (uncredited)
Winton's Attorney (uncredited)
Tall Thin Henchman (uncredited)
Morgue Attendant's Assistant (uncredited)