Fact1: Carol not raise Paul fleeing with child to Jupiter space station to await shuttle back to Earth, Fact2: worker threatens to kill her with knife, Fact3: traces of powerful amphetamine-type drug in bloodstream allow miners to work continuously for days at time, Fact4: O'Niel waits for arrival of hitmen on supply shuttle from other side of Jupiter, Fact5: second is killed in glass greenhouse structure of outpost causing it blow him out to death in orbit
Output: Federal Marshal William ONiel is assigned to a tour of duty at the titanium ore mining outpost ConAm 27, operated by the company Conglomerates Amalgamated on the Jovian moon of Io. Conditions on Io are difficult: gravity is 16 that of Earths with no breathable atmosphere, spacesuits are cumbersome and miners carry their own air supply. Shifts are long but significant bonuses are paid. The general manager, Mark Sheppard, boasts that productivity has broken all records since he took over. Carol, ONiels wife, feels she cannot raise their son Paul on Io, fleeing with the child to the Jupiter space station to await a shuttle back to Earth. Tarlow, a miner, suffers an attack of stimulant psychosis – he sees spiders and rips open his spacesuit – resulting in death by explosive decompression. Cane, another miner, enters an elevator without his spacesuit during another psychotic episode and dies from decompression. With the reluctant assistance of Dr. Lazarus, ONiel investigates the deaths. Another incident involves a worker, Sagan, who takes a prostitute hostage and threatens to kill her with a knife. ONiel attempts to calm the man while Montone, his sergeant, sneaks in via the air duct and kills Sagan with a shotgun. ONiel and Lazarus discover that Sagan had traces of a powerful amphetaminetype drug in his bloodstream, which would allow the miners to work continuously for days at a time until they burn out and turn psychotic after approximately ten months of use. ONiel uncovers a drug distribution ring run by a corrupt Sheppard and sanctioned by Montone. Using surveillance cameras, ONiel finds and captures Nicholas Spota, one of Sheppards dealers who is murdered before he can be questioned. Montone is found garrotted. ONiel finds the latest shipment of drugs in a meat locker that was shipped from the space station but is then attacked by another dealer, Russell Yario. ONiel knocks him out, then destroys the shipment of drugs. When Sheppard finds out, he threatens ONiel and contacts his drug distributor, asking him to send in professional hitmen. ONiel is prepared having been monitoring Sheppards communications. ONiel waits for the arrival of the hitmen on a supply shuttle from the other side of Jupiter. Realizing what is coming and with only Dr. Lazarus willing to help him, ONiel sends a message to his family promising to return to Earth when his job is done. ONiel ambushes the hitmen one by one. Lazarus helps him kill the first by trapping him in a pressurized corridor; ONiel activates a bomb, causing an explosive decompression that kills the hitman. The second is killed in a glass greenhouse structure of the outpost when ONiel tricks him into shooting a window, causing it to break open and blow him out to his death in orbit. ONiel is then confronted by Sheppards inside man who is revealed to be one of his own deputies, Sgt. Ballard. The two fight outside the outpost near the satellite structure until ONiel pulls Ballards oxygen hose, suffocating him. ONiel then confronts the surprised Sheppard inside the outposts recreation bar, knocking him out with one punch. It is implied Sheppard will now be brought to justice or murdered by his own associates. ONiel bids farewell to Lazarus and leaves on the shuttle to join his wife and son on the journey back to Earth.