When his daughter goes missing, Jack knows his past has come back to haunt him. He also knows the only way he can find her is to use the powers of his long forgotten faith, La Santa Muerte, protectors of the sinner, the worshippers of the dead.
The search takes him to where it all began, to a psychic whovisualises his secret in terrifying detail, to the squalid barrios and the seediest brothels in Mexico City's underbelly.