For one hundred years, the infamous Philadelphia State Hospital at Byberry was known as a warehouse for the criminally insane. With its 58 buildings, and labyrinthine network of catacombs beneath, it once housed 6500 patients. In the 1990s it closed its doors forever, dispersing patients to other state hospitals. But Luther Wade never left, who now roams the catacombs beneath the city, observing the residents of Northeast Philadelphia from the miles of tunnels underneath their homes. On New Year's Eve a wealthy businessman man is found brutally murdered in the basement of his Parkwood mansion. Detectives Kevin Byrne and Jessica Balzano get the case. On the way back to the station, they discover a mute two-year-old girl wandering the streets. She carries with her a small plastic purse with a key piece of evidence linked to the unsolved murder of a world renown psychiatrist.
