Alton Logan spent twenty-six years in prison for a murder he did not commit, sleeping with a homemade metal shank under his pillow for protection. Meanwhile, attorney Dale Coventry kept the evidence that would ultimately exonerate Logan—another man’s confession—in a box beneath his bed. Coventry kept the confession secret for a quarter century because he believed that it was protected by attorney-client privilege and that his duty of confidentiality to his client mattered more than decades of Mr. Logan’s life.