In announcing the “Summer of Mystery” theme, CBS teased that Big Brother 27 would introduce a surprise “Mystery Houseguest” ...

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 ...

"Big Brother" Season 27 contestants better grab a life vest, because star Rachel Reilly is checking in as the 17th houseguest ...

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

Here's everything to know about the rules all Big Brother contestants must follow. One of the most crucial elements in Big ...

Contestants on 'Big Brother' must follow certain rules. Here's everything to know about the rules that 'Big Brother' ...

The long-running reality competition series "Big Brother" officially returns on Thursday, July 10 at 8 p.m. ET on CBS.

The first cheesy segment of the season then occurred: An odd man in a red mask appeared on the TV and said he was behind the ...

“Big Brother” season 27 is here with a whole new group of people trying to be the last houseguest remaining and the winner of ...