According to German bookkeeping, more than a million Jews were shot by Himmler’s police forces and their local collaborators in the East. Martin Dean’s new book examines the participation of local Belorussian and Ukrainian police in this crime. Much has been written about the role of the Einsatzgruppen in the initial wave of killings in 1941. During the “second wave” in 1942, however, in many areas the death toll exceeded that in 1941. Local police assisted the Germans in the murder of their neighbors within earshot of their own homes. The numbers of indigenous police personnel involved in the atrocities outnumbered their Nazi German colleagues.