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.

In Season 27 of "Big Brother," houseguests will spend the summer inside Hotel Mystère, an enigmatic yet luxurious version of the "Big Brother" house.

The first cheesy segment of the season then occurred: An odd man in a red mask appeared on the TV and said he was behind the disappearances of Julie and the HOH relic. Julie called the houseguests on a phone and told them that eight people would try to find her and the other eight would look for the HOH relic.