Tracy Beaker author Dame Jacqueline Wilson helps wind-up her biggest fan in a special hidden-camera prank. Sam Nixon and Mark Rhodes are joined in the studio by Lawson. Show more
Sam Nixon and Mark Rhodes go undercover to surprise two fans in Bristol. Pop sensation Amelia Lily performs in the studio. Show more
JLS join the Wind-Up team to surprise three of their biggest fans. Scouting for Girls perform their latest song and an audience member gets a surprise. Show more
Sam and Mark take their hidden cameras to Yorkshire. One Direction join in with the wind-ups to give a superfan a super surprise and Lemar pops in to sing his latest single.
Sam and Mark go undercover to surprise two fans in Kingston. They are also joined in the studio by pop sensation A*M*E. Show more
Conor Maynard surprises two megafans and gives them a special performance. Hosts Sam Nixon and Mark Rhodes are joined in the studio by dance group Flawless. Show more
Hosts Sam Nixon and Mark Rhodes go undercover to surprise two fans in Hale. They are joined in the studio by acoustic duo Lilygreen and Maguire. Show more
Sam and Mark take their hidden cameras to Liverpool to wind up a couple of fans. Two audience members get to play a game with boyband The Mend. Show more
Sam and Mark take their box of disguises to Manchester to surprise two of their biggest fans. The Voice's Tyler James joins them in the studio. Show more
In the final show of the series, One Direction wind up two megafans with the help of some hidden cameras. Sam and Mark are given their most dangerous challenge yet. Show more