1957 film by Lesley Selander

Three Indians were brutally murdered by a gang of hooded outlaws. Each one possessed a silver medallion, which were sections cut off from a large silver plaque which served as a treasure map to a secret location where a large amount of gold is reputedly stashed. Two more medallions are unaccounted for, and the The Lone Ranger and his friend Tonto must use all their resources to intercept the gang, prevent further carnage and save the owners of the medallions.

Two brothers, one wanted for murder, are shipwrecked on an island inhabited by nubile young women who have amassed a valuable cache of pearls.

Four astronauts returning from man's first mission to Mars enter a time warp and crash on a 26th Century Earth devastated by atomic war. At first unaware where they are, but finding the atmosphere safe to breathe, they start exploring and find themselves in a divided future where disfigured mutants living like cavemen inhabit the surface, while the normals live comfortably below the surface but are dying as a race from lack of natural water, air and sunlight.