Blue Murder Sezon 4 Odcinek 1: Not a Matter of Life and Death

A mother's worst nightmare - her talented teenage son is stabbed to death during a night out to celebrate his birthday. Janine asks the team to pull out all the stops to find his killer, but is Richard really giving it his all? There is also a lot more for Janine to uncover than murder in this night-time tragedy, as lies and false alibis complicate the case.