WWI and WWII battle scenes, mention that Nazis killed Russian prisoners of war, many without food so they died of starvation; references to extermination of Jews in concentrations camps; picture of bomb exploding on a plane; London bombed during Blitz; a meeting room exploding from a bomb; two men huddling together under rubble after plane drops bomb on German prison; German officer facing Nazi firing squad. Hitler depicted as wolf wearing Nazi arm band devouring soldiers. Mention that in 1939, anxious to start war, Hitler dressed his own troops in Polish uniforms, had them "invade" German radio station on Polish border. Picture of apparent German soldier on the ground with explanation that Hitler "dressed prisoners from concentration camps in in German uniforms, killing some and using their bodies to prove the attack on Germany was real."

Dietrich falls in love with Maria and they get engaged but never have a chance to marry. Their relationship is made up of longing, writing letters to each other, and rare visits, including in prison for only a few minutes under the watchful eyes on Nazi guards, without any touching.

Man shown holding a pipe. One of the assassination attempts involved hiding a bomb in a package of two brandy bottles.

Parents need to know that John Hendrix's graphic novel The Faithful Spy: Dietrich Bonhoeffer and the Plot to Kill Hitler tells the gripping true story of Dietrich Bonhoeffer, a German Lutheran theologian who, after much soul searching, became part of a plot to assassinate Hitler -- a plot that would prove unsuccessful and cost Bonhoeffer his life. In addition to being a compelling biography of an exceptional man of great moral integrity, it's an excellent primer on Hitler's rise to power, the causes of World War II, Hitler's military strategy during the war, the Holocaust, and the German resistance. The facts and issues are clearly laid out and imaginatively illustrated, making it a terrific asset for anyone studying World War II. It also deals with Bonhoeffer's personal struggle with his Christian faith, from the time he's a kid pondering the meaning of life and the nature of God (as many kids will) to when he's an adult wrestling with what it means to put your faith into action and questions regarding your duty to God vs. country. Violence includes battle scenes of World War I and II, bombings, mention of the deaths of Jews in concentrations camps and that the Nazis killed Russian prisoners of war or starved them to death. A German officer facing a Nazi firing squad is pictured, and Hitler is depicted as a wolf devouring soldiers in his mouth. Hendrix cleverly represents the "good guys" (Bonhoeffer, the plotters, ordinary Germans) and their scenes in a bold turquoise and the "bad guys" (Hitler and the Nazis) in blood red, which helps readers track the various developments in this complex history.