Robert's jealousy over Shirley and Billy's friendship threatens to boil over. Fi confronts Archie - Niamh has told her everything and is aghast to learn of the lengths Archie was willing to go in order to protect himself. Bob's unhappiness at taking the blood money increases as Lenny rubs it in - he's got away with murder. Marty unwittingly gets himself entangled with the criminal underworld. Harry warns Lenny he's watching him and he's not going to rest till he gets him locked up.