Matalo! (Kill Him) (1970)

A gang rescues a criminal from the gallows to attach them and rob a stagecoach full of gold. When they get the loot, betray him and leave him dying in the middle of the desert. The band reaches a mysterious ghost town where they perceive that there is something strange about. They discover that there only lives a mysterious old woman, but they do not know is that a mysterious shadow lurks.