‘Big Brother’ returns to previous format

“Big Brother 10” is returning to its roots.

For its new season, premiering Sunday, the CBS reality show is sealing 13 actual strangers – no ex-lovers, secret twin partners or long-lost siblings this time – inside a makeshift house on a Studio City soundstage for the chance to be the last houseguest standing and take home the $500,000 grand prize.

The contestants – which will include a gay bull rider, a Hooters waitress, a professional bodybuilder and a 75-year-old former Marine – will spend the summer competing in challenges and evicting each other while being monitored by more than 50 cameras.

It’s the first time since the show’s third season that the houseguests are all strangers.

“When approaching this season, we wanted to look at what made this spark and last for 10 seasons,” says executive producer Allison Grodner.

“Every season had its unique twist. I think, in a way, going back to basics and having the cast be all strangers is part of the twist of ‘10.’ Of course, there will be more.”