From the archive: The retired cops investigating unsolved murders in one of America’s most violent cities

We are raiding the Audio Long Read archives to bring you some classic pieces from years past, with new introductions from the authors. This week, from 2016: A former murder capital of the US, Camden, New Jersey has created its first cold case squad. Can solving old killings help restore an embattled community’s trust in law and order? By Christopher Pomorski. Help support our independent journalism at <a href="https://www.theguardian.com/longreadpod">theguardian.com/longreadpod</a>