Today, 90 percent of psychiatric beds are located in jails and prisons across the United States, institutions that confine disproportionate numbers of African Americans. After more than a decade of research, the celebrated scholar and activist Mab Segrest locates the deep historical roots of this startling fact, turning her sights on a long-forgotten cauldron of racial ideology: the state mental asylum system in which psychiatry was born and whose influences extend into America's troubled present.