The Ganymede Club

"The Ganymede Club" is a science fiction novel by Charles Sheffield, published in 1995. The story's mystery unravels in the same universe that Sheffield created for Cold as Ice, shortly after humanity begins colonisation of the solar system.

Setting

Story elements take place prior to and after to the fictional Great War between Earth and the Belt colonies that wipes out half of humanity. The introduction to the novel gives the following timeline of major events:

*2012 - First manned trip to Mars.
*2020 - First Mars colony. Smart probes leave on solar system Grand Tour.
*2029 - First Belt mines and colonies.
*2030 - Von Neumanns released on Ganymede.
*2032 - First human exploration of the Saturn system.
*2038 - Solar studies research station on Mercury.
*2040 - Second human exploration of Saturn system; smart probes leave for moons of Uranus.
*2044 - Ceres and Pallas colonies achieve self-sufficiency.
*2046 - Venus terraforming effort aborted; first Venus station.
*2048 - Third Saturn exploration team; Von Neumanns released on Titan.
*2050 - Rapid development of Jovian moons Ganymede and Callisto, research station on Europa.
*2053 - Belt declares independence. Major frictions between Earth and former Belt colonies.
*2054 - Disappearance of fourth Saturn exploration team.
*2055 - Earth population tops ten billion, Mars population tops ten million.
*2057 - Research station proposed for Oberon.
*2060 - Armageddon Defense Line installed on Luna. Luna population reaches seven million.
*2061 - Fifth Saturn exploration team.
*2062 - Belt population tops one hundred million. Colonies on Ceres, Pallas, Vesta, Juno, Hidalgo, and twenty-seven smaller planetoids.
*2066 - Sixth Saturn exploration team; Ganymede/Callisto population reaches eighty million.
*2067 - The Great War.

Humans have colonised the solar system with the help of self-replicating machines called Von Neumanns.The story begins at the early exploration of Saturn's moons (specifically Helene, in 2032) but the novel's main mystery unfolds on Ganymede after the Great War.The main protagonist is Lola Belman, a futuristic psychiatrist who uses advanced sensors and psychoactive drugs to study patients. She and her brother Spook narrowly escaped the apocalypse on earth as children and settled on Ganymede. Spook is mathematically savant and an aspiring player on the Puzzle Network. There he meets Bat, an obese black teenage genius, an older version of whom is a main character in Cold as Ice.When one of Lola's patients complains of memories that couldn't possibly have happened to him, the three characters accidentally uncover a bizarre conspiracy.