12 part silent serial- 1. The Castle of Fear 2. The Spider's Web 3. The Vanishing Heiress 4. The Room Without a Door 5. Shots in the Dark 6. Ambushed 7. The Secret of the Coin 8. Into the Web 9. The Baited Trap 10. The Lady in White 11. The Closing Web 12. The Final Reckoning. A prequel to The Ace of Scotland Yard.
Hayden Stevenson
as Angus Blake
Grace Cunard
as Queen of Diamonds
Gloria Grey
as Lady Diane Blanton
Herbert Prior
as Lord Blanton
Monte Montague
as Jarvis
Wilbur Mack
as Albert Drexel
Al Hart
as The Spider (as Albert Hart)
Walter Brennan
as Henchman (uncredited)
George Burton
as Henchman (uncredited)
