John Craven hosts the quiz in which contestants and viewers face a mental fitness test set by the most exacting of task masters: the Brain. A team of four contestants must navigate a selection of tricky puzzles, fiendish logic problems and prickly posers in an effort to win a cash prize.

In this episode, a team of four friends - a police detective, an auctioneer, a customer services officer and a social club manager - give themselves an intensive mental workout as they try to beat the Brain. Show less