Mammy's Gamble is a Christmas Special that was broadcast on New Years Day in 2015.
After a series of local burglaries, Agnes allows Dino to install a burglar alarm made in North Korea. The alarm proves useless as thieves have already stolen the television, and the alarm traps Agnes and Buster Brady in the living room. Dermot Brown has to save them.
Dermot has problems of his own. He cannot secure a bank loan to set up his own business. Meanwhile, Cathy Brown is considering artificial insemination to get pregnant. Agnes resolves to help the both of them by entering the poker tournament at Foley's Bar which has a 15,000 Euro prize.