A gripping new short story in the DS McAvoy series by David Mark, bestselling author of the Richard & Judy pick DARK WINTER. Will Blaylock died while on day release from prison. It was a bad death. But accidents will happen. Detective Sergeant McAvoy isn't convinced, though. And he owes a debt to Will's cellmate Owen McSween: a debt formed in blood and fear when they came together to catch a killer. But their search for a murderer will rip open old wounds, and force old enemies out of hiding...