In Knife-edge, body parts wrapped in tartan blankets put Taggart and Livingstone on a trail fraught with dead ends to catch a killer. In Death call, a woman's body is found floating in the river Clyde and while all the evidence points to one young man, Taggart is not convinced he's guilty. In The killing philosophy, Taggart heads the hunt for the masked "Glasgow Bowman", a psychopath whose terrifying attacks seem to lack motive.

Knife-edge -- Death call -- The killing philosophy.