Mon Jul 07 23:40:00 UTC 2025: **FOR IMMEDIATE RELEASE**

**’Big Brother’ Season 27 Set to Launch with Mystery Houseguest and Extended Episodes**

**LOS ANGELES, CA – July 7, 2025** – The wait is almost over, Big Brother fans! CBS’s hit reality show, Big Brother, returns for its 27th season this week, promising a summer full of drama, alliances, and strategic gameplay.

Season 27 kicks off with a special 90-minute premiere on **Thursday, July 10th, from 8:00-9:30 p.m. ET.** Viewers can tune in for regular episodes on **Sundays and Thursdays, with special 90-minute episodes every Wednesday** from 8-9:30 p.m. ET.

This season will also debut **”Big Brother: Unlocked”** every other Friday, starting July 25, from 8-9 p.m. ET. This new show promises behind-the-scenes access, exclusive interviews with BB All-Stars, surprise guest appearances, and insider analysis of gameplay, all offering unique insights from former Houseguests.

Adding to the anticipation, host Julie Chen Moonves has teased a **”mystery houseguest”** whose identity remains a closely guarded secret. In an interview with Entertainment Weekly, Chen Moonves described the houseguest as “epic” and “very polarizing,” hinting at a player who will undoubtedly stir up the house and generate strong reactions from viewers.

“What I can say is the mystery houseguest, when I was told who this person is, I had to expect the unexpected,” Chen Moonves revealed. “I never expected that person… getting that person is epic.”

Live feeds will commence on July 14 at 12:30 a.m. ET, giving fans 24/7 access to the houseguests’ every move.

Julie Chen Moonves returns as host, guiding viewers through the twists, turns, and dramatic evictions of the season. Last season, Chelsie Baham emerged victorious, defeating Makensy Manbeck in a 7-0 vote.

With a mix of fresh faces, a mysterious houseguest, and extended episodes, Big Brother Season 27 promises to be one of the most unpredictable and exciting seasons yet. In addition, Chen Moonves hinted at the potential return of Celebrity Big Brother this winter.

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