Life in the Catholic Church of the Holy Redeemer in Detroit is upset by a series of killings whose victims are all priests and nuns. All victims are found with a black rosary in their hands. Father Koesler begins collaborating with the police but soon finds himself in a spot when the killer decides to choose him as confessor.
The lives of six girls belong to different worlds although connected to each other through a doll called Molly, whose existence dates back to 1976, when she appeared among the rubble of the great fire of the San Carlos orphanage, in northern Spain.