Murphy infiltrates a group of Diamond thieves and discovers a sinister connection with Japanese heroin dealers. Meanwhile Hatcher is planning a hiest.

Murphy is sent to prison to share a cell with a man suspected of being a kidnapper. One of his victims is still missing, and Murphy must try to learn her location before it is too late.

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.

In this episode, Murphy tries to catch a killer who is stalking homeless people in London's West End. The case becomes personal when tragedy strikes.