"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 ...

F loaters, grab a life vest! Rachel Reilly made her triumphant return to Big Brother during Thursday's Season 27 premiere.

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

The first person to enter the Big Brother house has never won the game, but that curse may be broken with this Big Brother ...

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

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

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

In the weeks leading up to the premiere of 'Big Brother' 27, CBS teased a 17th mystery houseguest. The identity of that ...

Legendary ‘Big Brother’ Winner Rachel Reilly Joins Season 27 as ‘Mystery Houseguest’ first appeared on Parade on Jul 11, 2025 This story was originally reported by Parade on Jul 11, 2025 ...