Mon Jul 14 01:00:00 UTC 2025: **FOR IMMEDIATE RELEASE**

**”Big Brother: A Summer of Mystery” Promises Twists, Deception, and a Secret Houseguest**

**LOS ANGELES, CA – July 3, 2025** – Get ready for a summer of strategic gameplay and shocking revelations as “Big Brother” Season 27: A Summer of Mystery” is set to premiere this week. CBS has announced that the latest installment of the hit reality competition will feature unexpected twists, a masked visitor, a secret accomplice, and the arrival of a “Mystery Houseguest” whose identity will be kept secret, adding an extra layer of intrigue to the competition.

Sixteen new houseguests will enter the Big Brother house, each with their own unique personalities and strategies. Here’s a sneak peek at the cast:

* **Adrian:** Confident and ambitious, believes he is the greatest “Big Brother” player the world has yet to see.
* **Amy:** A strategist who excels at building connections with others, and believes they have what it takes to win.
* **Ashley:** Ready to get her hands dirty, and eliminate the competition.
* **Ava:** Open about her financial situation, and will do whatever it takes to secure the $750,000 prize.
* **Captain Will:** An energetic and joyful individual who will bring the love.
* **Isaiah:** Physically, socially and mentally going to sweep away the competition.
* **Jimmy:** A master manipulator with a professional strategy background, ready to use manipulation tactics to win.
* **Katherine:** Skilled at deception and getting what she wants, leveraging her experience in the service industry.
* **Keanu:** Thinks his personal training background coupled with his improv skills, will help him connect with others.
* **Kelley:** A farm kid with grit and determination, ready to tackle any task in the house.
* **Lauren:** A Southern belle with a competitive edge, planning to study her houseguests and exploit their weaknesses.
* **Mickey:** A neutral party who plans to strike when the time is right.
* **Morgan:** Coming into the house to bring hot tea and cause chaos.
* **Rylie:** Calm, cool and collected, just being her self and nothing less, nothing more.
* **Vince:** A game of weekly mini games of ‘Big Brother’ and survive week by week.
* **Zach:** Interested in getting to know everyone’s deepest secrets, in order to win.

The 90-minute premiere will air Thursday, July 10 at 8 p.m. ET/PT on CBS. Fans can also catch the action on Paramount+ with Showtime subscribers and Pluto TV, which will feature Big Brother live feeds.

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