Dr. Mark Cooney recently published a book co-authored with his former student Scott Phillips: Geometrical Justice: The Death Penalty in America by Scott Phillips and Mark Cooney. Routledge (2022). Legal decisions continue to mystify: why was this person sentenced to 20 years in prison, but that person to just 10 years for the same crime? Why did one person sue for civil damages, but another let the matter drop? Legal rules are supposed to answer these questions, but their answers are radically incomplete. Wouldn’t it be wonderful to have a theory that predicted and explained legal decisions? Drawing on Donald Black’s theoretical ideas, Geometrical Justice: The Death Penalty in America addresses these issues, focusing specifically on who is sentenced to death and executed in the United States. The book explains why some murders are more serious than others and how the social characteristics of defendants, victims, and jurors affect case outcomes. Building on the most rigorous data in the field, the authors reveal wide discrepancies in capital punishment – why one person lives, but another person dies. Geometrical Justice will be of interest to those engaged in criminal justice, criminology, and socio- legal studies, as well as students taking courses on sentencing, corrections, and capital punishment.