When the team raid a brothel being operated as a massage parlor, they discover that the young female employees have been smuggled into the country from refugee camps in Eastern Europe.
A murderer stalks the streets of London, targeting pimps, and, in a bizarre twist of fate, Inspector Pat Chappel is called upon to protect his former adversaries.
With Joe's increasing tendency for violence and aggression, it seems to make him the prime suspect, but Chappel thinks otherwise and sets out to find who the real killer is.