The Thirteenth Step

S23, E2: Ex-con Eddie Monroe is found stabbed in a Govan alleyway. Burke meets Angus Ford - a retired police officer who was responsible for Monroe's arrest and subsequent convictions - who remains adamant that Monroe was a bad man who deserved to die, but who was his killer? All roads lead back to old acquaintance Daniel Tulloch and his family. In the course of uncovering the truth Burke is forced to face some demons of his own.