Outland (1981)

IMDB
Genre : Action, Crime, Sci-Fi, Thriller, Western
TRAILER
Director : Peter Hyams
Stars : Sean Connery, Peter Boyle, Frances Sternhagen, James Sikking
Plot : A federal marshal newly stationed at a mining colony on the Jupiter moon of Io notices a series of unusual deaths. Against the advice of everyone, he digs deeper to find the cause, and finds himself marked for death.