The most popular pick, handsdown, of who the mystery guest is would be none other than Rachel Reilly. She already made two ...

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 ...

As fans streaming Big Brother online for early results of the Week 1 veto competition or a clue at who is going home were ...

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

Well played, Zach! It looks like the marketing manager is having a brodown throwdown with his boy Vince over this surprising ...

Before the season 27 premiere, many fans speculated that the mystery houseguest could be anyone from Celebrity Big Brother UK ...

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

Grab a life vest, floaters, because Rachel Reilly is checking in to Hotel Mystère on Big Brother. The iconic Big Brother ...

The latest “Big Brother” season debuted on July 10, and is scheduled to continue airing over the next three months leading up ...

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

"Big Brother" is back this summer to celebrate its 25th anniversary ... a secret accomplice and the shocking arrival of a "Mystery Houseguest” whose identity will remain under wraps … at least for now ...

A first look at the 'Big Brother 27' house teases a mystery theme, a 'Mystery Houseguest' and twists that fans won’t see coming ...