Wire in the Blood: Season 4, Episode 2

4 - 2: Torment

Tony and Alex investigate the violent murder of a young prostitute, but find that their prime suspect for the murder was incarcerated in a high security psychiatric unit at the time. Suspecting a link to an ongoing Vice operation, Alex teams up with squad detectives Shields & Mulligan. But when the next target becomes one of their own, Tony is forced to find the link between the killer and the outside world.