Diễn viên
Russell Hardie
Manuel Kimball
Walter Kingsford
Emanuel Jeremiah (E.J.) Kimball
Frank Conroy
Dr. Nathaniel Bradford
Juan Torena
Carlo Maringola
Victor Jory
Claude Roberts
Nana Bryant
Sarah Barstow
Joan Perry
Ellen Barstow
Boyd Irwin
Prof. Edgar Barstow
Dennie Moore
Mazie Gray
John Qualen
Olaf
Gene Morgan
Det. Lt. O'Grady
Martha Tibbetts
The Apartment House Maid
Eddy Waller
Golf Starter (uncredited)
Edward Arnold
Nero Wolfe
Lionel Stander
Archie Goodwin
Rita Hayworth
Marie Maringola