Tim Whelan
Director George M. Arthur
Producer

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)

Archie Marshek
Editor Victor Young
Original Music Composer Ted Tetzlaff
Director of Photography Howard J. Green
Screenplay Harry D. Mills
Sound Recordist John Cope
Sound Recordist