Ranvir Singh hosts the quiz where Andy and Lorraine, Maisie and Andrew, and Carl and Ashley take on Riddlemaster Henry Lewis in an attempt to solve a series of riddles - packed full of confusing conundrums and quick-fire general knowledge questions, only one team can make it through to the high-stakes final of Henry's Riddle Run and earn the chance to win an exciting cash prize as they take on a series of riddles against the clock.