Book chronicles how the wrongly imprisoned men coped . Billy Smith : `` When you hold on to anger , you ca n't see what 's up ahead '' and that can be a very dangerous thing in prison' The book is based on interviews with more than 100 former inmates who were released from jail after serving time for murder. ` I did n't know anything about cell phones , '' said Smith . Author says book sends message that mistakes can happen in a great system .
Book chronicles how the wrongly imprisoned men coped . Billy Smith : `` When you hold on to anger , you ca n't see what 's up ahead '' and that can be a very dangerous thing in prison' The book is based on interviews with more than 100 former inmates who were released from jail after serving time for murder. Author says book sends message that mistakes can happen in a great system .