BIG BROTHER welcomes eight new Houseguests, plus the return of some of the most notorious "duos" from past seasons, when the CBS reality series premieres Thursday, July 7 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Julie Chen is the host.

This summer's twist, "Double Trouble," will feature the return of some of the most dynamic "duos" in the history of BIG BROTHER. The return of these former Houseguests will immediately impact the way the game will be played this summer.

The identities of the returning "Duos" will be revealed during the premiere episode on July 7.