The Master KeyMovie19145h 10mActionAdventureDramaA movie serial from 1914PlayDirectorRobert Z. LeonardStarringRobert Z. Leonard, Ella Hall, Harry Carter, Jean HathawayCastRobert Z. LeonardJohn Dore (as Bob Leonard)Ella HallRuth GallonHarry CarterHarry WilkersonJHJean HathawayJean DarnellAlfred HickmanCharles EverettWilbur HigbyTom GallonCharles ManleyTom KaneJack HoltDonald FavershamJim CoreyWah SingAllan ForrestGeorge Crane (as Alan Forrest)More like The Master KeyDangers of the Canadian MountedFederal Agents vs. Underworld, Inc.Government Agents vs Phantom LegionRadar Patrol vs. Spy KingThe Black WidowThe Adventures of Smilin' JackThe Black SecretThe Girl and the GameThe Adventures of KathlynFlash GordonThe Lightning RaiderThe Lost Express