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

Rachel Reilly, winner of Big Brother 13, was unveiled as the "mystery houseguest" competing again this summer on season ...

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

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

Janelle Pierzina and Rachel Reilly tease Big Brother fans with hints about the mystery houseguest in season 27 ...

Big Brother follows a group of people living together in a house outfitted with more than 100 cameras and 100 microphones, ...

The cast of "Big Brother" Season 27 has been revealed — with one "Mystery Player" set to make a surprise entrance.

It's officially time to expect the unexpected with Big Brother summer. Here's all you need to know this season.

"Big Brother" is back this summer with Season 27, where the official theme will be "Big Brother: A Summer of Mystery." ...

With a new season of "Big Brother" starting tonight, who are the contestants entering the house? Meet the Season 27 ...