On Jupiter's moon he's the only law.

On the sunless moon Io, Marshall William T. O’Niel goes toe-to-toe with the corrupt manager of a mining colony and his gang of roughnecks while investigating a rash of worker suicides.

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Main Cast: Sean Connery, Peter Boyle, Frances Sternhagen, James B. Sikking, Kika Markham, Clarke Peters, Steven Berkoff, John Ratzenberger, Nicholas Barnes, Manning Redwood

Director: Peter Hyams

Writer: Peter Hyams

Editor: Stuart Baird

Cinematographer: Stephen Goldblatt

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