A former 'Big Brother' player – and winner – was unveiled as the mystery 17th houseguest during the season 27 premiere.

Big Brother season 27 is taking place with a brand new house theme called Hotel Mystere, and it will have mystery challenges for the houseguests left and right.

You can catch the Season 27 premiere of “Big Brother” on the CBS Television Network on Thursday, July 10 at 8 p.m. Fans can ...

Grab a life vest, floaters, because look who just resurfaced back in the Big Brother house.

After much anticipation, Big Brother Season 27 revealed the mystery houseguest. Former contestant and winner of the ...

Big Brother viewers up North in Canada can watch Big Brother Season 27 simultaneous with their US cousins on Thursday, July ...

Big Brother Season 27 premieres July 10 with 17 houseguests entering Hotel Mystère. Get cast details, house tour, and ...

The 27th season of Big Brother kicks off with a wild premiere that finally reveals who the "Mystery Houseguest" is before ...

Big Brother 27,' hosted by Julie Chen Moonves, premieres on Thursday,. See which houseguests are in power as HoH, who is ...

"Big Brother" revealed its mystery houseguest for season 27 Thursday: the legendary Rachel Reilly. Reilly entered the house ...

Before the season 27 premiere, many fans speculated that the mystery houseguest could be anyone from Celebrity Big Brother UK star JoJo Siwa to a Big Brother newcomer like Tom Sandoval from Vanderpump ...