David Kaczynski - brother to convicted Unabomber Ted Kaczynski - presents a highly personal and powerful memoir of his family as well as a mediation on the possibilities for reconciliation and maintaining family bonds. David saw Ted as a brilliant, if troubled, young mathematician and loving older brother. Their parents were supportive and emphasized the importance of education and empathy. But as Ted grew older he become more withdrawn, his behavior increasingly erratic and he often sent angry letters to his family from his isolated cabin in rural Montana. An afterword is included by forensic psychiatrist James L. Knooll, who discusses the current challenges facing the mental health system in the United states as well as the link between mental illness and violence. David has become a leading activist in the anti-death penalty movement.