Clark and his team are called in to investigate when a black youth is killed in a hail of police bullets, and are soon caught up in conflict between the police and the local community. Their investigation draws them into the world of crack cocaine dealing.

A high profile M.P. is caught with his trousers down, and suspicion falls on his police protection officers. As more revelations appear in the tabloid press, Clark suspects a smear campaign.

Det. Sgt. Connell's professional and private lives come into conflict when CIB investigate a police officr suspected if being the driver involved in a tragic hit-and-run incident. Det. Supt. Clark, meanwhile, is becoming increasingly obsessed with Angela Berridge.

Det. Insp. Naylor faces a disciplinary hearing when he is caught moonlighting for a security firm to raise funds for the treatment of his terminally ill wife, Joyce. Det. Supt. Clark confronts Angela Berridge over their relationship.