From the New York Times bestselling author of The Surgeon and The Apprentice comes a chilling new novel of suspense featuring Boston medical examiner Dr. Maura Isles, on the deadly trail of an anonymous madman who’s committed an unholy crime. . . .THE SINNER Not even the icy temperatures of a typical New England winter can match the bone-chilling scene of carnage discovered in the early morning hours at the chapel of Our Lady of Divine Light. Within the sanctuary walls of the cloistered convent, now stained with blood, lie two nuns—one dead, one critically injured—victims of an unspeakably savage attacker. Tess Gerritsen left a successful practice as an internist to raise her children and concentrate on her writing. She gained nationwide acclaim for her first novel of medical suspense, the New York Times bestseller Harvest. She is also the author of the bestsellers Life Support, Bloodstream, Gravity, and The Surgeon and The Apprentice. Tess Gerritsen lives in Maine.