While the GEO does its best to keep the peace on Poseidon, the colony world is an often lawless frontier. The Gorchoff Family rules the Haven underworld, the New Rastafarian Movement is the only law on Kingston's canals, and throughout the major settlements of the archipelago, petty crooks and nickel-and-dime hustlers lurk in the shadows, feeding off the unlucky and unwary. Welcome to the dark side of the human colonization of Poseidon, where Mafia enforcers extort money from the weak and innocent, and GEO Marshals administer justice with a neural-linked Peacemaker. NRM posses fight for their independence on both sides of the law, and Native Patrolmen walk a dangerous line between loyalty and duty. Welcome to a world in which Magistrates wield the law like a hammer, and syndicate bosses spend lives like currency. Welcome to Frontier Justice! This sourcebook for Blue Planet v2 gives players and moderators the resources they need to create and run exciting campaigns featuring crime and law enforcement. *Detailed descriptions of criminal activity on the colony world, from computer crime to drug trafficking. *In-depth coverage of Poseidon's major organized crime syndicates, the Gorchoff Family and the New Rastafarian Movement. *Overview of criminal investigation, from crime scene analysis to DNA profiling.*Descriptions of the major law enforcement agencies on Poseidon, from the Native Patrol to the Marshal Service. *Detailed profiles of major personalities in crime and law enforcement. *A glossary of slang and jargon used in law enforcement and criminal underworld. *Three interlinked adventure scenarios in which the players can assume the roles of either the criminals or the lawmen.