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.
Practical Effects
Gritty lived-in sets that smell like sweat and welding fumes.
Acting
Connery's weary gravitas against Peter Boyle's sleaze.
Direction
Hyams channels Peckinpah in zero gravity corridors.
Director
Peter Hyams
Sean Connery
Marshal William T. O'Niel
Peter Boyle
Mark Sheppard
Frances Sternhagen
Dr. Lazarus
James B. Sikking
Sgt. Montone
Kika Markham
Carol O'Niel
Clarke Peters
Sgt. Ballard
Steven Berkoff
Sagan
John Ratzenberger
Tarlow
Nicholas Barnes
Paul O'Niel
Manning Redwood
Lowell
Pat Starr
Flo Spector
Angus MacInnes
Hughes
Stuart Milligan
Walters
Trivia, insights & behind the scenes
Hyams used no blue screens—every effect was front projection or practical sets, giving Io its oppressive physicality.
This is literally High Noon in space; the clock even ticks toward the same noon showdown structure.
US
GB
