The Chase: Celebrity Special: Season 4, Episode 9

4 - 9: Adrian Chiles, Gemma Merna, Rosie Marcel and Jon Snow

ITV football presenter Adrian Chiles, former Hollyoaks star Gemma Merna (Carmel Valentine), Holby City's Rosie Marcel (Jac Naylor) and broadcaster Jon Snow compete to win thousands of pounds for charity by taking on one of the show's resident trivia experts in a test of their general knowledge. However, they must work as a team to build their prize pot and stay one step ahead of the Chaser. Bradley Walsh hosts