Ranvir Singh hosts the quiz where contestants 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 a cash prize as they take on a series of riddles against the clock. How will Ben and Sarah, Tracey and Warren, and Lucy and Sean cope under pressure?