The “Big Brother” 27 secret accomplice twist is already driving fans wild. From edits to behavior, here’s who they think is behind it all.

In addition to the three episodes a week schedule, "Big Brother: UNLOCKED" will air every other week throughout the season, where three BB All-Stars will offer commentary on the events of the game.

Julie Chen Moonves is the host of CBS' long-running reality show, Big Brother, which premieres its 27th season this week.

"Big Brother" airs from 8-9:30 p.m. ET Sunday. Sunday's episode will last 90 minutes, from 8-9:30 p.m. ET. In addition to ...