Prisoner (2008)

Contestants guess hidden phrases by guessing letters one at a time. Contestants win money or prizes, as determined by a spin of the wheel, for each correct consonant they guess. But they have to pay to see what vowels are in a puzzle. The contestant that has amassed the most winnings at the end of a game goes on to play the bonus round, in which the player can win even more -- prizes frequently seen in the bonus round include automobiles, vacations and more cash.

The Challenge: All Stars features twenty-two of the most iconic, boldest, and fiercest Challenge All Stars from the original Real World and Road Rules, returning for a chance at the ultimate competition as they vie for their shot at the $500,000 grand prize.

When Maddie finds herself trapped in afterlife limbo at her high school, she decides to investigate her own mysterious disappearance.

Earth is visited by an alien species that threatens humanity's existence. Events unfold in real time through the eyes of five ordinary people across the globe as they struggle to make sense of the chaos unraveling around them.

The series will explore the origins of the Peacemaker, a man who believes in peace at any cost - no matter how many people he has to kill to get it.