In 17th-century France, a Jesuit priest received an impossible mission: convince the world that Jesus was revealing his Sacred Heart to an obscure nun that most people dismissed as delusional. Claude de la Colombière had everything to lose—his reputation, his career, perhaps his life. Yet he chose to believe when no one else would.

This is the dramatic true story of a man who moved from the quiet corridors of Paray-le-Monial to the deadly intrigues of the English royal court, where being Catholic meant living under constant suspicion and where a fabricated conspiracy would land him in prison facing execution. In the freezing darkness of that cell, too sick to stand and too faithful to break, Claude discovered what the Sacred Heart devotion truly meant—and lived it with a courage that still inspires millions.

From his mysterious childhood calling to his triumphant death at age forty-one, this is a tale of visions and prisons, of faith tested in the furnace of suffering, of a quiet revolutionary who changed Christianity by doing one simple, radical thing: he believed in Love when love demanded everything. Historically accurate, emotionally gripping, and deeply spiritual—this is the story of Saint Claude de la Colombière as you’ve never heard it before.​​​​​​​​​​​​​​​​