Originally planned as a vehicle for Charles Hutchison, to be directed by W.S. Van Dyke. Filming of the first episode went disastrously: Hutch was to jump from a balcony to a chandelier and swing across a room, but the chandelier came crashing to the floor with him. The result was the backwards dislocation of one of Hutch's elbows. The project was shelved and eventually scrapped.
Chapter Titles: (1) The Secret Portal (2) Two Lockets (3) The Wedding (4) Buried Alive (5) Desert Trails (6) Tomb of the King (7) Claws of the Vulture (8) Held for Hostage (9) The Rack (10) The Temple of the Forty Doors
Several stills survive, but this serial is believed to be lost.