"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 ...

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

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

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.

A Big Brother legend entered the house in season 27's premiere, and ahead of their time in the BB house, they share a ...

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

Leading up to the premiere of Big Brother Season 27, which marks the franchise’s 25th year on air, CBS teased that their newest season would be chock-full of twists and turns.

Legendary ‘Big Brother’ Winner Rachel Reilly Joins Season 27 as ‘Mystery Houseguest’ originally appeared on Parade. Big Brother kicked off its 27th season with a 90-minute premiere full of ...