The Mad Doctor

A reporter sleuths the mystery behind an oft-married Viennese doctor whose wives met mysterious fates.

• 
  Tim Whelan
• 
  Joseph C. Youngerman

• 
  Basil Rathbone
  Dr. George Sebastian / Dr. Langamann
• 
  Ellen Drew
  Linda Booth
• 
  John Howard
  Gil Sawyer
• 
  Barbara Jo Allen
  Louise Watkins (as Barbara Allen [Vera Vague
• 
  Ralph Morgan
  Dr. Charles Downer
• 
  Martin Kosleck
  Maurice Gretz
• 
  Kitty Kelly
  Winnie
• 
  Hugh O'Connell
  Lawrence Watkins
• 
  Henry Victor
  Furber (Uncredited)
• 
  Wanda McKay
  Girl at Charity Bazaar (Uncredited)
• 
  James Seay
  Intern (Uncredited)
• 
  William Benedict
  Mickey Barnes (Uncredited)
• 
  George Chandler
  Elevator Operator (Uncredited)
• 
  Edward Earle
  Librarian (Uncredited)
• 
  Chuck Hamilton
  Police Officer at Train Station (Uncredited)
• 
  Harry Hayden
  Ticket Clerk (Uncredited)
• 
  Douglas Kennedy
  Hotel Clerk (Uncredited)
• 
  John Laing
  Intern (Uncredited)
• 
  Charles McAvoy
  Officer Riley (Uncredited)
• 
  Howard M. Mitchell
  Butler (Uncredited)