Loyalty (Part 1)

Season 2, Episode 1: Season Premiere

In the first of a two-part episode, a disabled man's badly-burned body turns up in a remote part of Manchester. Another corpse is discovered a few days later. The detectives start to realize the victims weren't just murdered, but tortured, too. They make an arrest, but it becomes clear their investigation has just scratched the surface. Meanwhile, Janet throws her husband out and Rachel's estranged brother turns up on her doorstep.