The Mine with the Iron Door
Having acquired the controlling interest in the Eureka Discovery Corporation for five-hundred dollars, and selling half of it to a detective for two-hundred dollars, Bob Harvey sets off with his new partner to find the buried treasure of San Capello---with very strange consequences.
- genus: Mystery, Adventure, Romance
- Studio: Columbia Pictures, Sol Lesser Productions
- keyword: treasure, detective, buried treasure
- cast: Richard Arlen, Cecilia Parker, Henry B. Walthall, Stanley Fields, Spencer Charters, Charles C. Wilson