Director/a
Tim Whelan
DIRECTOR/A
Reparto (por orden de créditos)
Basil Rathbone
Dr. George Sebastien aka Dr. Frederick Langamann
Ellen Drew
Linda Boothe
John Howard
Gil Sawyer
Barbara Jo Allen
Louise Watkins
Ralph Morgan
Dr. Charles Downer
Martin Kosleck
Maurice Gretz
Kitty Kelly
Winnie
Hugh O'Connell
Lawrence Watkins
Bobby Barber
Bald Man in Library(uncredited)
William 'Billy' Benedict
Mickey Barnes - Copy Boy(uncredited)
George Chandler
Elevator Operator(uncredited)
Edward Earle
Librarian(uncredited)
Chuck Hamilton
Police Officer at Train Station(uncredited)
Sam Harris
Passerby(uncredited)
Harry Hayden
Ticket Clerk(uncredited)
Douglas Kennedy
Hotel Clerk(uncredited)
Settar Körmükçü
Dr. David Profesor(uncredited)
John Laing
Intern(uncredited)
Charles McAvoy
Officer Riley(uncredited)
Wanda McKay
Girl at Charity Bazaar(uncredited)
Howard M. Mitchell
Butler(uncredited)
Ruth Rogers
Woman at Charity Bazaar(uncredited)
Sheila Ryan
Hostess at Charity Bazaar(uncredited)
James Seay
Hospital Interne(uncredited)
Hugh Sothern
Dr. Hatch(uncredited)
Norma Varden
Charity Bazaar Woman(uncredited)
Henry Victor
Furber(uncredited)
Max Wagner
Taxicab Driver(uncredited)