Jesus Ramirez

Detectives Byrne and Balzano return to the streets of Philadelphia to put an end to a macabre succession of murdered children. A quiet Philadelphia suburb. A woman cycles past a train depot with her young daughter. There she finds a murdered girl posed on a newly painted bench. Beside her is a formal invitation to a tea dance in a week's time.

Mackie is a Replacement — left in the crib of a human baby sixteen years ago. Now, because of fatal allergies to iron, blood, and consecrated ground, Mackie is slowly dying in the human world. Mackie would give anything to live among us. He just wants to play bass guitar and find out more about an oddly intriguing girl named Tate. But when Tate’s baby sister goes missing, Mackie is drawn irrevocably into the underworld of Gentry, known as Mayhem....