Harvard Business School historian Nancy Koehn spotlights five masters of crisis: polar explorer Ernest Shackleton; President Abraham Lincoln; legendary abolitionist Frederick Douglass; Nazi-resisting clergyman Dietrich Bonhoeffer; and environmental crusader Rachel Carson. What do such disparate figures have in common? Why do their extraordinary stories continue to amaze and inspire? Nancy Koehn offers a remarkable template by which to judge those in our own time to whom the public has given its trust. She begins by showing each protagonist on the precipice of a great crisis: Shackleton marooned on an Antarctic ice floe; Lincoln on the verge of seeing the Union collapse; escaped slave Douglass facing possible capture; Bonhoeffer agonizing over how to counter absolute evil with faith; Carson racing against the cancer ravaging her in a bid to save the planet. The narrative then reaches back to each person's childhood and shows the individual growing - step by step - into the person he or she will ultimately become. As we follow each leader's against-all-odds journey, we begin to glean an essential truth: leaders are not born but made. In a book dense with epiphanies, the most galvanizing one may be that the power to lead courageously resides in each of us.