By John Hendrix | Amazon.com | 272 pages
Published in September of 2018
SUMMARY: John Hendrix’s The Faithful Spy is an engrossing and visually arresting account of Dietrich Bonhoeffer—a German pastor whose fierce moral clarity led him into the heart of a conspiracy to resist, and ultimately assassinate, Adolf Hitler.
Stylistically, The Faithful Spy is remarkable. Hendrix’s blend of graphic-novel aesthetics with historical narrative feels fresh and accessible. It’s a book that will appeal to both fans of graphic literature and to readers who don’t typically gravitate toward illustrated storytelling. The compelling images amplify the emotional stakes of Bonhoeffer’s journey, making complex political and theological ideas digestible without ever dumbing them down. This makes it particularly well-suited for high school history classes, where visual engagement can ignite deeper interest and understanding.

At its core, the book traces Bonhoeffer’s transformation from theologian to conspirator. Hendrix captures how Bonhoeffer “reframed the Christian life through a lens of action” and insisted that faith must demand something of us. As the book puts it, “He called for radical obedience that was not cheap but costly.” Bonhoeffer refused to reduce Christianity to “comforting thoughts about God,” insisting instead on an ethic that required real sacrifice. His convictions were not abstract: “You didn’t just pray for the tanks to stop rolling, you threw yourself in front of them.” Hendrix illustrates this moral evolution with clarity and urgency, showing how Bonhoeffer’s internal wrestling ultimately led him into the resistance, convinced that doing nothing in the face of evil was itself a betrayal of the faith he preached.
Hendrix further enriches the narrative with selections from Bonhoeffer’s own writings and letters. These excerpts provide personal depth and emotional immediacy, reminding the reader that this was not a mythic figure, but a young pastor with doubts, hopes, and an unwavering commitment to truth.
Blending biography, theology, and graphic storytelling, The Faithful Spy is not only informative but deeply stirring, making it an excellent entry point for readers new to Bonhoeffer and a compelling re-telling for those already acquainted with his life.
KEY QUOTE: “Dietrich Bonhoeffer had, through is life’s writings and now his deeds, reframed the Christian life through a lens of action. He called for radical obedience that was not cheap but costly. Faith wasn’t just about creating a set of comforting thoughts about God, it was living out an ethic that called for sacrifice. You didn’t just pray for the tanks to stop rolling, you threw yourself in front to them.”
BONUS: Listen to Hendrix talk about The Faithful Spy on the Intersect: Where Church Meets Culture.
DID YOU KNOW? Sunday to Saturday has a Good Reads page where we post all of the books we have read – even the ones that didn’t make the cut.
More curated content:
BOOK: The Ragamuffin Gospel
The Ragamuffin Gospel is not so much a theological treatise as it is a wake-up call—one delivered gently but insistently to the soul that keeps trying to earn what Christ has already given. Manning’s premise is simple: most Christians do not actually believe in the incomprehensible, unearnable grace of God. We nod politely at grace…
Read moreLEARNING CAPSULE: Thanksgiving
America’s origin story is deeply tied to Thanksgiving and the Pilgrims. Unfortunately much of what we have been taught in school is not true. Below are our favorite resources to relearn Thanksgiving.
Read moreLEARNING CAPSULE: Memento Mori
Learn about Memento Mori and how a Christian can integrate the philosophy into everyday life.
Read more