The most popular pick, handsdown, of who the mystery guest is would be none other than Rachel Reilly. She already made two appearances on the reality show, and won season 13, but she could be back for more. What gave it away for fans was a license plate that had the dates of July 2011.

Popular reality show “Big Brother” premiered this week, featuring two Texas residents who say they are up for the challenge.

CBS has announced a few twists that “Big Brother” fans can expect to see when the show returns for Season 27, including one that even surprised host Julie Chen Moonves.

The houseguests of Big Brother 27 have been announced, and before you tune into the special premiere on Thursday, July 10, you should get familiar with the cast — including those from the New Jersey-New York metro area. Here are the Big Brother 27 houseguests with regional ties.

The cast of "Big Brother" Season 27 has been revealed — with one "Mystery Player" set to make a surprise entrance.

Big Brother follows a group of people living together in a house outfitted with more than 100 cameras and 100 microphones, recording their every move 24 hours a day. Each week, someone will be voted out of the house, with the last remaining Houseguest receiving the grand prize of $750,000.

Big Brother has unveiled a new cast of scheming players, and teased the mysterious returning alum. We have a theory!