Trapped! (TV series)

Trapped! is a 2007-2010 children's Halloween-themed adventure game show that was broadcast on the BBC from 28th September 2007 to 4th November 2010.
Plot.
The show as a whole is set in a dark, six-floored gothic fairy tale tower which, from the opening titles, is situated on a small island in the middle of the sea. Every episode is introduced by "The Caretaker" (Simon Greenall), a former world traveler who only came there for one good night's sleep prior to his imprisonment by a mysterious invisible female person known as "The Voice" (performed by Eve Karpf and Faith Brown). To earn his freedom, the Caretaker must trap as many children (or as referred to in the show as, "Unfortunates") as the Voice deems worthy in groups of six brought to the tower by another captive, "Wiley Sneak" (Olly Pike) who uses rowing boat for transport (For which the caretaker refers to as a "Bobbing Craft".). The children summoned are then imprisoned at the top of the tower to journey to the bottom, with each floor eliminating one child, having been left behind and "Trapped" on the floor forever. The last one left standing, having moved though all floors until they reach the bottom, will be awarded with "the key of freedom" to escape from the tower and return home via the Bobbing Craft. The Caretaker observes the events while isolating in the attic of the tower using his "Watch Tank", a globe type device with a glass shell that inside, projects a 360° overhead view of the entire tower and the events happening within, all while providing narration and instructions.
"Trapped!" (2007–2009).
Six "Unfortunates" begin at the top of "the tower" to complete one challenge per floor. They each wear a listening device known as a "Whisper Clip", and prior to every challenge, one Unfortunate is chosen through their Whisper Clip as the Saboteur. It is then that unfortunate's job to sabotage the challenge without being detected by the other contestants, along with guidance from The Voice. Wiley Sneak demonstrates how each challenge is done while The Caretaker provides instructions with voiceover, in stock segments before each saboteur is selected. 
After every challenge, if the team do pass the challenge, the rest of the team minus the Saboteur move down one floor inside the tower, with that child being eliminated and "Trapped" on that floor in the tower for the remainder of the programme. If the team do fail the challenge, however, every child votes for whoever they think was the Saboteur, and the one with the most votes is "trapped" on that floor in the tower instead. "Draw Straws" are used in the event of a tie, with whoever draws the shortest straw being the one trapped.
This repeats on a floor-by-floor basis until there are only two Unfortunates remaining. The final round is a timed, alternating memory-based quiz, (known as "The Fight For Freedom",) consisting of a series of questions based on the events of the Unfortunates' time in the tower throughout the course of the episode. Whoever has the higher score wins the game, and leaves the tower, along with the Key Of Freedom.
"Trapped!: Ever After" (2010).
For 2010, changes were made to the format of the programme, particularly in areas of themes, the games and interaction with the Unfortunates. As well as introducing a brand new attic for the Caretaker, recaps were made of previously trapped unfortunates on higher floors of the tower and the appearance of the Voice was revised. The final round was also changed into a "best-of-seven" quiz - get one question correct and you take one step towards the Key of Freedom. Get the question wrong and your opponent takes a step towards the Key Of Freedom.
Music.
The music is written by Dobs Vye, a composer who specialises in writing for television.
Online Video Game.
In 2009, a multiplayer online game was released after the end of the third series. This game contained a selection of the challenges from the programme, slightly edited to fit the format. Players must first select an Unfortunate to play as, and then move along. They are either chosen to be a "saboteur" in secret, or just get shown a picture of a clock and an otherwise blank screen. The voice gives hints to the saboteur throughout each separate game as to how to ruin the challenge. If the team passes, then they vote, but the saboteur is trapped; and if they fail, then whoever gets the most votes is trapped on the following tower floor. In the event of a tie, then two spotlights flash over the drawing players until only one spotlight remains on. The player under the remaining spotlight is trapped in the tower forever. The cartoon-style characters used in the game parody the opening. As of 2021, the game is no longer available to play on the CBBC website.