Dirección: Ford Beebe
El doctor Drury vuelve invisible a Robert Griffin, un asesino psicópata, quien tiene el problema que cuando quiere volver a la visibilidad debe inyectarse sangre de otra persona, matándola en el proceso. Griffin aprovechará su invisibilidad para vengarse de unos antigüos amigos a los que acusa de robarle y haber intentado matarle.
Jon Hall
Robert Griffin
Evelyn Ankers
Julie Herrick
Alan Curtis
Mark Foster
Leon Errol
Herbert Higgins
John Carradine
Dr. Peter Drury
Gale Sondergaard
Lady Irene Herrick
Lester Matthews
Sir Jasper Herrick
Halliwell Hobbes
Cleghorn, the butler
Leyland Hodgson
Sir Frederick Travers, chief constable
Cyril Delevanti
Malty Bill, shopkeeper
Jimmy Aubrey
Wedderburn, the Innkeeper (uncredited)
Billy Bevan
Police Sergeant (uncredited)
Ted Billings
Bettor in Pub (uncredited)
Lillian Bronson
Norma, the Maid (uncredited)
Leonard Carey
The Police Constable (uncredited)
Russell Custer
Pub Patron (uncredited)
Janna DeLoos
Nellie (uncredited)
Tom Dillon
Ned Towle, Darts Expert (uncredited)
Arthur Gould-Porter
Tom Meadow (uncredited)
Bobby Hale
Pub Patron (uncredited)
