The Calixis Sector is plagued with heretics, recidivists, and the unworthy - and it is the Adeptus Arbites who bring them to judgement. Book of Judgement is a guide to crime and punishment in the Calixis Sector and provides a powerful resource for Dark Heresy campaigns that feature Imperial Law as a story foundation. This detailed supplement contains new rules, backgrounds, alternate careers, and provides players with information about the Adeptus Arbites' mission to bring order to the Calixis Sector. Game Masters of all experience levels will find expanded Investigation rules and a new adventure, Jurisdiction, that plunges the Acolytes into a conflict between three of the Imperium's most powerful organizations.