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

Here are some of fans' best guesses for who might be the mystery houseguest of BB27: ...

The houseguests of ‘Big Brother’s 27th season were unveiled shortly before the premiere! Get to know each of them and their ...

These 16 houseguests, plus a mysterious additional player, will be moving into the famous “Big Brother” house for a summer ...

Rylie Jeffries is a superfan, and if he's anything like past Oklahoma representation on the show, he's sure to leave his mark ...

In honor of the 25th anniversary of the CBS summer reality series, here are 25 previous houseguests we need on our screens ...

Since its premiere on July 5, 2000, the CBS reality competition series has had its share of fights and emotional moments ...