Having come of age on the mob-controlled streets of 1960's South Philly, Detective Pete Coletti learned early to walk the fine line between cops and criminals -- a skill that served him well during his eighteen years in homicide. Now nearing the end of his illustrious career, the highly decorated Coletti seems to be on the top of his world. But Coletti is harboring a terrible secret. His most famous arrest was based on a lie, and soon the priest he imprisoned for a decade-old murder known as the Confessional Killing will be put to death. And it all comes to light when the real killer begins to leave his calling card once again, turning Philadelphia upside down.