Story Structure — 5 Plot Phases
A Deadly Mining Frontier
The isolated Io outpost is introduced as a hazardous workplace with long shifts and limited air. Miner deaths and a violent hostage incident expose a growing danger.
Key Events
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Con-Am 27 Outpost — The isolated mining outpost operates under low gravity, no breathable atmosphere, and long high-risk shifts. Characters: Mark Sheppard, Dr. Lazarus, Cane, Tarlow, Sagan
Location: Jovian moon Io
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Productivity Records Announced — Sheppard boasts that productivity has broken records since he became general manager. Characters: Mark Sheppard
Location: Con-Am 27
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Family Leaves Io — The marshal's wife leaves Io with their son and waits at the station for a shuttle to Earth.
Location: Jupiter space station
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Cane Dies In Elevator — Cane enters an elevator without a spacesuit during a psychotic episode and dies from decompression. Characters: Cane
Location: Outpost elevator
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Tarlow's Spider Hallucinations — Tarlow hallucinates spiders, tears open his equipment, and dies from explosive decompression. Characters: Tarlow
Location: Mining outpost
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Death Investigation Begins — The marshal investigates the miner deaths with reluctant assistance from Dr. Lazarus. Characters: Dr. Lazarus
Location: Outpost medical area
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Sagan Takes Hostage — Sagan takes a prostitute hostage and threatens her during a stimulant-induced psychotic episode. Characters: Sagan
Location: Outpost quarters
The Stimulant Conspiracy
Medical evidence links the deaths to polydichloric euthimal, a stimulant used to increase productivity. The investigation begins to implicate the outpost's management and distribution network.
Key Events
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Sagan Takes Hostage — Sagan takes a prostitute hostage and threatens her during a stimulant-induced psychotic episode. Characters: Sagan
Location: Outpost quarters
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Sagan Is Shot — A security sergeant enters through an air duct and kills Sagan with a shotgun. Characters: Sagan
Location: Outpost quarters
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Stimulant Found In Blood — Medical analysis finds polydichloric euthimal in Sagan's bloodstream. Characters: Dr. Lazarus, Sagan
Location: Outpost medical area
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Drug Scheme Exposed — The stimulant enables prolonged work but eventually causes psychosis and physical burnout. Characters: Mark Sheppard, Dr. Lazarus
Location: Con-Am 27
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Spota Is Captured — The marshal uses surveillance cameras to find and capture Sheppard's dealer, Nicholas Spota. Characters: Mark Sheppard, Nicholas Spota
Location: Outpost surveillance area
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Spota Is Murdered — Spota is murdered before he can be questioned about the drug operation. Characters: Nicholas Spota
Location: Con-Am 27
A Network Turns Violent
A dealer is captured and murdered, a security sergeant is garrotted, and a hidden drug shipment is discovered. Destroying the shipment provokes Sheppard to order professional killings.
Key Events
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Security Sergeant Found Dead — The sergeant who helped stop Sagan is found garrotted, escalating the conspiracy.
Location: Con-Am 27
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Drug Shipment Discovered — The latest shipment of drugs is found in a meat locker after arriving from the space station. Characters: Mark Sheppard
Location: Outpost meat locker
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Shipment Destroyed — The marshal defeats an attacking dealer and destroys the drug shipment.
Location: Outpost meat locker
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Sheppard Orders Hitmen — Sheppard threatens the marshal and contacts his distributor for professional assassins. Characters: Mark Sheppard
Location: General manager's office
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Communications Are Hacked — The marshal hacks into Sheppard's communications and learns that assassins are approaching. Characters: Mark Sheppard
Location: Con-Am 27
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Message Sent To Family — The marshal promises his family he will return to Earth when his job is done. Characters: Dr. Lazarus
Location: Con-Am 27 communications room
Assassins In The Void
Forewarned by hacked communications, the marshal prepares for the incoming hitmen with Lazarus as his only willing ally. The assassins are killed through decompression and environmental traps.
Key Events
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Message Sent To Family — The marshal promises his family he will return to Earth when his job is done. Characters: Dr. Lazarus
Location: Con-Am 27 communications room
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First Assassin Trapped — Lazarus helps trap the first assassin in a pressurized corridor. Characters: Dr. Lazarus
Location: Pressurized corridor
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Corridor Decompression — An activated bomb causes explosive decompression and kills the trapped assassin. Characters: Dr. Lazarus
Location: Pressurized corridor
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Greenhouse Assassin Killed — The second assassin shoots a greenhouse window, which breaks and blows him out into space.
Location: Outpost greenhouse
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Ballard Ambushes O'Niel — Ballard, Sheppard's inside man, attacks the marshal outside the outpost near the satellite structure. Characters: Sgt. Ballard
Location: Satellite structure
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Ballard Is Defeated — The marshal cuts Ballard's oxygen supply and pushes him into an electrical station, vaporizing him. Characters: Sgt. Ballard
Location: Electrical generation station
Justice And Departure
Ballard is defeated, and Sheppard is knocked unconscious in the recreation bar. Arrest warrants are issued for the wider conspiracy before the marshal leaves Io to rejoin his family.
Key Events
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Ballard Is Defeated — The marshal cuts Ballard's oxygen supply and pushes him into an electrical station, vaporizing him. Characters: Sgt. Ballard
Location: Electrical generation station
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Sheppard Confronted In Bar — The marshal confronts Sheppard and knocks him unconscious with one punch. Characters: Mark Sheppard
Location: Outpost recreation bar
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Arrest Warrants Issued — Authorities issue warrants for Sheppard's associates, including Con-Am executives. Characters: Mark Sheppard
Location: Con-Am 27 communications room
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Departure For Earth — The marshal says farewell to Lazarus and leaves on a shuttle to rejoin his family on the journey to Earth. Characters: Dr. Lazarus
Location: Io shuttle platform