Countdown's Nick Hewer joins singer and TV personality Stacey Solomon, the Kaiser Chiefs' Ricky Wilson and Diversity dancer Perri Kiely for the latest culinary challenge. Presenters Sandi Toksvig and Noel Fielding guide them through the assorted tasks, and Paul Hollywood and Prue Leith pass judgment on their baking skills. On the menu are scones, a devilish technical, and a showstopper challenge in the form of self-portrait croquembouches, but which of the famous faces will impress those judges?