What exactly is torture? Should we torture suspected terrorists if they have information about future violent acts? Defining torture carefully, the book defends the idea that all people are valuable, and rejects moral defenses of torture. It focuses particularly on practices like sensory deprivation, which perniciously attack the human psyche.

Jeffreys explores the spiritual consequences and ethics of modern solitary confinement and emphasizes how solitary confinement damages our spiritual lives. He focuses particularly on how it destroys one's relationship to time and undermines our creativity, and proposes institutional changes in order to mitigate profound damage to prisoners.