After a small win on the Grand National, Bernard becomes addicted to gambling, leaving Fran and Manny in a bitter competition to sell as many books as possible. Soon horses aren't enough and Bernard lands in an illegal poker game against a group of ruthless, successful gamblers, including Dave 'Mouse Ear' Smith. Being utterly hopeless at cards, Bernard (now nicknamed The Gold Mine) loses everything, and Fran and Manny need to hatch a plan to obtain the money before Bernard's debtors "evict" him from his shop, £20,000, and/or his legs. Guest stars: Keith Allen as 'Mouse Ears' Smith and Craig Parkinson as Martin the Tout.