Dietrich Bonhoeffer's writings, his prophetic Christian witness amid criminal abuses of power, racial persecution, terror, and genocide by his own government, and his martyrdom for participating in the coup to overthrow Hitler continue to inspire and provoke important questions and actions. The global following for this German pastor and theologian includes agnostics and atheists, evangelicals and liberal Protestants, Catholics and Jews, and people of many political persuasions, young and old alike.

By the same token, Bonhoeffer has been claimed by quite different, indeed opposite, religious groups, individuals, and political leaders to support their purposes. George W. Bush invoked his name before the German parliament in 2002 to justify the invasion of Iraq. Nelson Mandela read him in prison on Robben Island before his release in 1990. East German youth sang verses of his prison poem "By Powers of Good" before the fall of communism, without necessarily knowing he was a Christian.

The very titles of two biographies of Bonhoeffer that appeared within a few weeks of each other in 2010 suggest the diversity of those who may be drawn to him. While Eric Metaxas' book title, Bonhoeffer: Pastor, Martyr, Prophet, Spy, A Righteous Gentile vs. the Third Reich (Thomas Nelson), and his engaging style give his book the accessibility and appeal of a novel, it is stunningly flawed as a biography. Metaxas misleads readers both by his title and by his presentation of Bonhoeffer as a lone heroic figure. Yes, Bonhoeffer's covert position with a military intelligence office gave him the cover needed to travel abroad on behalf of the resistance, but a James-Bond-like "spy" he was not. Nor does Metaxas ever explain in the book the use of the term "righteous gentile" in the title. This designation is bestowed by Yad Veshem, the Holocaust Martyrs’ and Heroes’ Remembrance Authority in Jerusalem, to those who aided Jews in the Holocaust. Does Metaxas know that Bonhoeffer has not been given this honor?

I met Eliza Griswold in a Starbucks round the corner from her apartment on Manhattan’s Upper West Side. Thrumming with nervy energy, she comes off as smart, ambitious, charismatic, and intensely interested. Griswold has published one book of poetry, Wideawake Field (Farrar, Straus and Giroux). Her poetry and award-winning journalism have been published in The New Yorker, New York Times Magazine, The Atlantic Monthly, The New Republic, and Harper’s. Now in her mid-30s, Griswold grew up in various parts of Pennsylvania and moved to Chicago in 1987, when her father, Frank Griswold, an Episcopal priest, was consecrated as a bishop. (He would later serve as presiding bishop of the Episcopal Church in North America from 1997 to 2006.)

Eliza Griswold’s first full-length prose work is The Tenth Parallel: Dispatches from the Fault Line Between Christianity and Islam (Farrar, Straus and Giroux). In it she recounts her journeys within Nigeria, Sudan, Somalia, Indonesia, Malaysia, and the Philippines. The text, although nicely larded with statistics and historical background, focuses particularly on her encounters with the men and women most vigorously engaged, on one side or the other, in the frequently violent clashes between Christians and Muslims in those countries. Where the book shines is in the way it allows you to take tea with a Jihadi leader and notice his odd habitual gestures, or the fact that he laughs less than the first time we met him. The big picture is illuminated through such exquisitely detailed miniatures.