In the first major biography of Bonhoeffer in forty years, "New York Times" best-selling author Eric Metaxas takes both strands of Bonhoeffer's life ― the theologian and the spy ― to tell a searing story of incredible moral courage in the face of monstrous evil. In a deeply moving narrative, Metaxas uses previously unavailable documents ― including personal letters, detailed journal entries, and firsthand personal accounts ― to reveal dimensions of Bonhoeffer's life and theology never before seen.