When someone forgets to book the studio audience, Sam and Mark are left with time on their hands to reminisce over some of the highlights of the current series. It's been emotional.

Join Sam and Mark for more hilarious pranks and festive surprises. There are brand new games and fantastic guests, including Kimberly Wyatt and Hacker T Dog.

HRVY makes a surprise appearance to give a superfan the surprise of her life! Stars of Operation Ouch the van Tulleken twins go undercover in a viewer's house to carry out secret medical missions. There's a game of Karasoake, and Ben Shires takes questions and selfies from the audience.