American astronaut Frank Douglas mysteriously disappears from his spacecraft as it parachutes to Earth. He is apparently replaced by or turned into a large, radioactive, humanoid monster. A team of…

A deep-sea diver becomes romantically involved with the daughter of a gold smuggler.

After their service in the Civil War, four brothers go their separate ways, but later find themselves on opposite sides of a final showdown.

Chester Wooley and Duke Egan are travelling salesmen who make a stopover in Wagon Gap, Montana while enroute to California. During the stopover, a notorious criminal is murdered, and the…