Drummond's attempts to gain the confidence of Sid Wright are getting nowhere, so he literally plays his last hand when he follows Wright and gate-crashes a private poker game between Wright and the Fosters. On his way home from the game, Drummond is abducted by the Foster family, who reveal that they know about his polygamy, and the fact that he's a police officer. Meanwhile, a drunken brawl outside a pub turns nasty when Murphy finds a boy beaten badly on the street. Feeling guilty at having let the suspects off with a warning earlier, Murphy tackles the case on her own rather than handing it over to CID. Nixon reluctantly organizes a meeting between her daughter Abi and her father.