New Delhi, July 8 -- Big Brother is back. The reality series returns for its landmark 27th season. Set to premiere on Thursday, July 10, on CBS, this legendary edition introduces a group of 16 houseguests and teases an intriguing theme, tentatively titled the "Season of Secrets." With shifting alliances, surprise revelations and high-stakes drama ahead, fans can expect suspense. Here's everything you need to know as Big Brother 27 kicks off soon.

Big Brother 27's first episode will kick off with a special 90-minute premiere on Thursday, July 10 at 8:00-9:30 p.m. ET, along with longtime host Julie Chen Moonves returning to lead the action. While the debut episode will run longer than usual, the regular schedule for the season will vary sl...