Dietrich Bonhoeffer died a martyr's death at the age of 39 but remains one of the most influential and challenging theologians of our time. His writings teach us the value of cross-centered theology, and his courageous actions against the Nazi regime compel us to consider the cost of discipleship. From Bonhoeffer we learn that the Christian life is lived both alone and together, and that there is a stark difference between cheap and costly grace. With insight, clarity, and wisdom, Stephen Nichols guides us through the words and deeds of this humble yet heroic pastor, whose example shows us that the Christian's life flows from the cross, for the world.