Murphy infiltrates a group of diamond thieves and discovers a connection with heroin dealers; Hatcher plans a heist.

Murphy decides to share a cell with a suspected kidnapper so he can attempt to ascertain a victim's location from the kidnapper.

Mickey Munday a world famous Irish snooker player, comes under pressure to rig the outcome of his game in the forthcoming championships; Murphy and Annie go undercover to protect his life.

Murphy goes undercover as a bodyguard for gangland club-owner Carl Tate and tries to protect him from a revenge killer who is picking off members of the gang.

When an unknown blonde kills two rich businessmen connected only by their membership of a city gym, Murphy takes on the guise of a high-flying banker and hits the treadmills.

Murphy tries to catch a killer who is stalking homeless people in London's West End; the case becomes personal when tragedy strikes.