"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 ...

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 ...

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

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

From a The Traitors-esque hotel setting to the revival of last season’s second chance arena, Big Brother: A Summer of Mystery ...

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

Fans and Big Brother houseguests alike were amazed by Rachel Reilly's dramatic appearance on the first episode of Season 27.

Hotel Mystère — also known as the Big Brother house — is officially open for business! In Thursday’s Season 27 premiere, host ...

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

Big Brother Season 27 kicks off with a mysterious 17th houseguest, causing shock and disbelief among contestants, including ...