Big Brother 27 Introduces Polarizing Mystery Guest, Disruptive Hotel Mystère Theme

Big Brother Season 27, premiering on July 10, 2025, on CBS, features a mystery hotel-themed house called Hotel Mystère, filled with secrets, hidden passageways, and unique design elements such as a reception area with 75 key boxes and a Victorian conservatory. Host Julie Chen Moonves revealed that this season will introduce a polarizing mystery houseguest whose identity has shocked even her, promising strong reactions from fans. The season also includes a secret accomplice and a masked visitor expected to disrupt the game on a deeper, more impactful level than previous twists like last year’s AI Arena, which was well-received for its unpredictability. The theme revolves around mystery and observation, requiring houseguests and viewers alike to pay close attention to subtle clues throughout the game. Julie Chen Moonves has shared teasers and images hinting at a Clue-like vibe, emphasizing the season's layered surprises and strategic gameplay. While the houseguests have yet to be revealed, anticipation is high for the unfolding drama and unexpected turns in this innovative Big Brother season.