New Delhi, July 11 -- Big Brother, is back for its 27th season - and it's promising a summer full of suspense, secrets, and surprise guests. Titled Big Brother: A Summer of Mystery, the new season premieres Thursday (July 10), at 8 p.m. ET on CBS with a special 90-minute episode.

This season, houseguests will live in a setting dubbed Hotel Mystere - a moody, mystery-themed house filled with eerie clues and unsettling decor. CBS teases the arrival of a "mystery houseguest" and a "disruptive masked visitor," adding a layer of psychological tension to the already dramatic gameplay.

Premiere date: Thursday (July 10)

Time: 8 p.m. ET

Channel: CBS

The Big Brother Season 27 premiere will be followed by another 90-minute episode on Sunday (Ju...