The entire first series starring James Nesbitt as a maverick undercover cop. Devastated by the death of his daughter at the hands of terrorists in Northern Ireland, Detective Sergeant Tommy Murphy (Nesbitt) is on suspension and falling apart, until his bosses make him an offer to work undercover in London, taking the most dangerous cases offered to him. In the pilot, Murphy goes undercover to infiltrate a team of undertakers who are moonlighting as jewel thieves. In 'Electric Bill', Murphy matches wits with London's most infamous kidnapper in a desperate race against time. In 'Kiss and Tell', a beautiful blonde serial killer terrorises London's business elite, and Murphy must act as bait to lure her out. In 'Manic Monday', a top Irish snooker player is ordered to fix his next game - or die. Murphy and Annie go undercover to protect him, and to uncover the sinister organisation behind the death threats. Finally, in 'Reunion', a top member of an East End gang is murdered, and London looks set to be torn apart by a bloody gang war. Murphy infiltrates the ranks of a rival gang and sets about gathering evidence against its leader.