Elenco - Blake of Scotland Yard
Hayden Stevenson
Angus Blake
Grace Cunard
Queen of Diamonds
Gloria Grey
Lady Diane Blanton
Herbert Prior
Lord Blanton
Monte Montague
Jarvis
Wilbur Mack
Albert Drexel
Al Hart
The Spider (as Albert Hart)
Walter Brennan
Henchman (uncredited)
George Burton
Henchman (uncredited)