Rising crime levels on the council estates sees Ch. Supt. Brownlow with two additional problems: a gang of over-zealous security guards patrolling the Copthorne Estate, and a "mobile community liaison unit" - a caravan done up by PC Reg Hollis. When these two initiatives rankle a local gang, the guards are attacked at one end of the estate and Hollis finds himself a hostage in a potentially explosive situation. Managing to get the potential arsonist Tony Leyton on side with tales of his past misdemeanours, Hollis convinces Leyton to make a statement naming Danny McCormack as the ringleader in the attacks, but the rug is pulled out from under him when Brownlow cuts a deal with McCormack in order to preserve their public image.