My project reconstructs the legal imaginary of the Roman afterlife by analyzing the resonances between the Roman cult of the dead, mortuary practice, and the legal system. I argue that, for many in the Roman world, posthumous justice was actively negotiated and contested between the living and the dead. I demonstrate the persistence of participatory frameworks of judgement, where the collective deified dead would decide who to welcome. But I also show how the living, including agents of the imperial state, often sought to subvert the justice of the dead through capital punishment, the denial of burial and cult activities, the violation of tombs and corpses, and cursing. By using the law to illuminate the cult of the dead and the cult of the dead to illuminate the law, I aim to deepen our understanding of both. My research demonstrates the deep entanglement of Roman beliefs about premortem and postmortem justice and the fundamental inseparability of religion and the law.