"Springtime in Philadelphia brings flowers to Fairmount Park, picnics to Belmont Plateau, and rowers to the Schuylkill River. It also brings terror when the disfigured body of a young woman is found sitting at an outdoor table at a South Philly ice-cream parlour. In the victim's hands is an artifact from a bygone era: an antique silver cigarette case. When homicide detectives Kevin Byrne and Jessica Balzano investigate, they discover that the cigarette case is not the only thing connecting the victim to the past. In 1980 another body was found in the same place, in the same position, killed in the same manner. That case was never closed. The crime scene photos past and present are identical. As more unsolved murders from Philadelphia's past are recreated, Byrne and Balzano discover unnerving connections an insane woman in a state hospital, a tormented girl pursued for years by demons, the secretive members of Societe Poursuite, a diabolical killer called the Echo Man and come to the certainty that every murder leaves a trace, a haunting, sinister melody that never completely fades away "