Season 3, Episode 4:
Chopper Hadley, a notorious and violent criminal, is under suspicion for the murder of police informant Micky Springer. It is an investigation with huge personal repercussions for both Halford and Standing. While Halford was on the murder squad, Micky Springer had asked him for protection, but Halford was dealing with his own crisis -- his beloved wife, Mary, had been left critically hurt by a hit-and-run accident. With the case re-opened, Halford finds himself the target of a terror campaign, but is determined to get justice for Springer. The case also threatens to expose Standing's dodgy dealings from the past, when Andy Cutler, the original investigating officer on the case, reveals some unsettling truths.
A motley crew of retired police officers re-opens troublesome cases that were never laid to rest.