The setting is Miami. Rookie cop Tito Morales arrives at the Trianon hotel to investigate a routine disturbance call and, to his shock and horror, watches as a wealthy oil man plunges ten stories and impales himself on a nearby fence. Soon Morales is joined by detective Jimmy Paz, famous throughout the city for solving, or at least providing a plausible solution to, the so-called Voodoo Murders that left Miami burning months earlier.
Together Paz and Morales enter the hotel and discover in the dead man's room a most unusual suspect, an otherworldly woman by the name of Emmylou Dideroff. She emerges from a prayer-like state and says she wants to confess and asks for a pen and several notebooks.
What Emmylou writes is nothing like what Paz expects. He enlists psychologist Lorna Wise in an effort to make sense of things that go beyond Emmylou's explanation of the murder: details of childhood abuse, of other crimes committed, of regular communion with saints and with the devil. Is she mentally disturbed? Does she really believe herself to be an instrument of God? And why is it that so many people, including Paz's biological father, are suddenly interested in the contents of these notebooks and in preventing them from becoming public?
Emmylou's "confession" leads Jimmy Paz, Lorna Wise, and Tito Morales down a series of unexpected and dangerous turns that forces them each to confront questions about faith, love, and the possibility of the miraculous.