See 'Big Brother' Season 17 Photos

"Big Brother" follows a group of people living together in a house outfitted with dozens of high-definition cameras and microphones recording their every move, 24 hours a day. Each week, the Houseguests will vote someone out of the house. At the end, the last remaining Houseguest will receive the grand prize of $500,000. This summer's exciting new twist, "BB Takeover," features weekly surprise guests who will unleash new twists into the game each and every week. The season's special two-night premiere airs June 24 and 25 at 8 p.m. on CBS.