A woman has been arrested in the streets of Rome. She's young. She's beautiful. She's covered in blood. And she claims to be an ancient prophet in search of a mystical amulet hidden somewhere within the city. Ex-priest Tom Shaman teams up with a headstrong policewoman to unravel the mystery. But within Rome's churches and corridors of power, stealthy enemies are conspiring against them. And soon the woman's deadly visions begin to come true ...