Credits: Director, James W. Horne; story, Arthur Stringer; screenplay, Basil Dickey, George Plympton, Jesse A. Duffy, Charles R. Condon, Jack Stanley.
1. The Shaft of Doom. © 11Aug41; LP10961.
2. The Murderous Mirror. © 11Aug41; LP10983.
3. The Drop to Destiny. © 17Aug41; LP10984.
4. The Fatal Fuse. © 26Aug41; LP10991.
5. The Fiery Fall. © 19Sep41; LP10992.
6. The Ship Log Talks. © 26Sep41; LP10993.
7. The Mystic Map. © 20Sep41; LP10999.
8. The Perilous Pit. © 30Sep41; LP11000.
9. The Cul-de-Sac. © 7Oct41; LP11001.