In a very special episode, the 100 mob members square off against each other for a grand prize of $250,000. This time, the "one" will be selected from the mob and the game will continue until there is only one mob member left standing. In this battle of intellect and guts, there are no lifelines, no chance to take the money and run, and no choice but to keep going until someone walks away with a quarter of a million dollars. Members of the mob include game show heavyweights from "Jeopardy!" (Ken Jennings and five-time champion Brad Rutter) and from "Who Wants to Be A Millionaire" (former champions Nancy Christy and Kevin Olmstead). They are joined by poker great Annie Duke, Ivy League graduates, rocket scientists, trivia bowl champions and a nun. Also in tonight's episode, Raul Torres, Jr. of Van Nuys, California will play for a top prize of $1 million by trying to outsmart the mob, which includes Hawaiian Tropic Girls and paparazzi.