I love these YA versions of Christian hero biographies! Even though they're for young people, this one still made me really queasy because of all the atrocities from WWII.
I gotta say though, while Bonhoeffer was an amazing leader, Christian, pastor, and theologian, I personally think it was wrong for them to plot to kill Hitler. Lots of things in the Bible lead me to disagree with his choices, but that's only my opinion. Also, I find the title of martyr to be a misfit since he didn't die because of his faith in Christ so much as actual treason.
In spite of those unpopular opinions, I really enjoyed hearing about his ministry and journeys to other parts of Europe and also to the United States. It was wild to watch him react to America's racism and then see it happen in his own home country.
I prefer him to be praised as a bold preacher, professor, leader, and theologian than an insurrectionist.