The Darkest Hour: Shedding Light on the Impact of Isolation and Death Row in Texas Prisons by Dr. Betty Gilmore and Nanon M. Williams sheds light on the devastating impact of extreme isolation experienced by thousands of incarcerated individuals in Texas prisons — many of whom will be integrated back into society. This book presents an in depth view of the Texas prison system with a specific focus on Death Row and "solitary confinement," also known as administrative segregation.