CBS revealed the initial cast of Big Brother 27 on July 8, 2025—two days before the season premiered on July 10. The announcement introduced 16 new houseguests, while the season premiere-era mystery was eventually identified as returning player Rachel Reilly. That made the season’s full starting group 17 players, but Reilly should not be counted among the 16 new cast members.
Because season 27 concluded on September 28, 2025, this is now a retrospective cast guide rather than an upcoming-season announcement.
The initial ‘Big Brother 27’ cast at a glance
The 16-person cast announcement included a broad mix of ages, hometowns and professions—from a carpenter and a professional bull rider to an aura painter, dungeon master and college sports podcaster. The ages and occupations below describe the houseguests at the time of casting in July 2025; they are not permanent biographical labels.
| Houseguest | Age at reveal | Hometown or current city | Occupation at casting |
|---|---|---|---|
| Adrian Rocha | 23 | San Antonio, Texas | Carpenter |
| Amy Bingham | 43 | Stockton, California | Insurance agent |
| Ashley Hollis | 25 | Chicago, Illinois / New York, New York | Attorney |
| Ava Pearl | 24 | Long Island, New York / New York, New York | Aura painter |
| Cliffton “Will” Williams | 50 | Wallace, South Carolina / Charlotte, North Carolina | College sports podcaster |
| Isaiah “Zae” Frederich | 23 | Paducah, Kentucky / Provo, Utah | Salesperson |
| Jimmy Heagerty | 25 | Sarasota, Florida / Washington, D.C. | AI consultant |
| Katherine Woodman | 23 | Gwinnett County, Georgia / Columbia, South Carolina | Fine-dining server |
| Keanu Soto | 33 | Miami, Florida / McKinney, Texas | Dungeon master |
| Kelley Jorgensen | 29 | Burbank, South Dakota | Web designer |
| Lauren Domingue | 22 | Lafayette, Louisiana | Bridal consultant |
| Mickey Lee | 35 | Jacksonville, Florida / Atlanta, Georgia | Event curator |
| Morgan Pope | 33 | Palm Springs, California / Los Angeles, California | Gamer |
| Rylie Jeffries | 27 | Luther, Oklahoma | Professional bull rider |
| Vince Panaro | 34 | West Hills, California | Unemployed at casting |
| Zach Cornell | 27 | Cartersville, Georgia | Marketing manager |
The spellings “Cliffton” and “Rylie” are retained from the season’s cast materials.
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Rachel Reilly was the mystery houseguest
The season’s mystery-player twist brought back Rachel Reilly, a familiar face from Big Brother 12 and Big Brother 13. Reilly won season 13, making her return a significant change to an otherwise new-player cast.
She was not part of CBS’s initial July 8 list of 16 new houseguests. Her identity was revealed around the season premiere, creating the clean 16-plus-one structure: 16 newly cast players and Reilly as the returning 17th player. Calling all 17 contestants “new houseguests” would therefore be inaccurate.
What was the ‘Big Brother 27’ theme?
Season 27 placed the players in Hotel Mystère, a mystery-themed version of the Big Brother house. The promotional setup centered on hidden mysteries, a secret accomplice and the mystery houseguest, alongside the familiar social strategy and competitions. As usual, the houseguests were monitored around the clock as they competed for the season’s $750,000 grand prize.
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The season also brought back the AI Arena, a competition mechanic that had appeared in Big Brother 26. It was a returning format element—not part of the cast announcement itself—but it helped define the competitive structure surrounding the new players.
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When did ‘Big Brother 27’ premiere and end?
Big Brother 27 premiered on July 10, 2025, two days after CBS announced the initial cast. The season finale aired on September 28, 2025. In the finale, the final three competed for the power to cast the last eviction vote before the jury selected the winner.
That timing matters when reading older cast stories: the July announcement was presented as a pre-season reveal, but season 27 has now completed its run. CBS’s current show presentation has moved on to season 28, while season-specific episode information remains the appropriate reference for the season 27 premiere and finale dates.
Where to revisit the season
Viewers looking for episodes should start with CBS’s official Big Brother show and episode pages, along with the Paramount+ viewing options presented there. Availability, subscription requirements and episode access can vary by country and can change over time, so readers outside the United States should check the service available in their region.
Why the cast reveal was structured this way
The announcement gave viewers enough information to meet the new players while withholding one major piece of the season’s format. That distinction is important: the 16 names, ages, cities and occupations were the announced cast, while Rachel Reilly was a deliberate mystery element revealed close to the premiere.
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In short, the most accurate description of the season 27 cast is 16 new houseguests plus returning veteran Rachel Reilly. The season then played out in the Hotel Mystère setting, with the AI Arena returning and a $750,000 prize at stake.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
How many houseguests were in the ‘Big Brother 27’ cast?
CBS initially announced 16 new houseguests. Returning player Rachel Reilly was then revealed as the mystery player, bringing the starting group to 17.
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No. Reilly was a returning player who had previously appeared on Big Brother 12 and Big Brother 13, which she won. She was separate from the 16 newly announced houseguests.
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When did ‘Big Brother 27’ premiere?
The season premiered on July 10, 2025, two days after the initial cast announcement.
What was the ‘Big Brother 27’ prize?
The season’s grand prize was $750,000.
What was the ‘Big Brother 27’ house theme?
The house was presented as Hotel Mystère, a mystery-themed setting built around hidden mysteries, a secret accomplice and a mystery houseguest.
The Bottom Line
The accurate cast breakdown is 16 new players—Adrian Rocha, Amy Bingham, Ashley Hollis, Ava Pearl, Cliffton “Will” Williams, Isaiah “Zae” Frederich, Jimmy Heagerty, Katherine Woodman, Keanu Soto, Kelley Jorgensen, Lauren Domingue, Mickey Lee, Morgan Pope, Rylie Jeffries, Vince Panaro and Zach Cornell—plus returning veteran Rachel Reilly. Season 27 premiered July 10, 2025, used the Hotel Mystère theme and concluded September 28, 2025.
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