The Medici Heresy

Deep in the Vatican Archives, Father Michael Dominic uncovers a Renaissance letter that should never have survived—a plea from Pope Clement VII confessing to the concealment of a mysterious gospel. When the fragile parchment is linked to a forgotten Medici secret, Michael and investigative journalist Hana Sinclair are drawn into a centuries-old struggle between those who guard history and those who would weaponize it.

Their search reveals two lost texts—the Gospel of the Beloved, attributed to Mary Magdalene, and the Codex of Voices, a sixteenth-century record of the Church’s attempt to silence it. As the pair follows Clement’s trail from Florence’s ruined chapels to the hidden vaults of the Vatican’s Riserva, they confront a truth that challenges not doctrine but conscience: how far faith will bend to preserve itself—and how love endures when power demands silence.

THE MEDICI HERESY, the twelfth thriller in the Vatican Secret Archive series by bestselling suspense author Gary McAvoy.