Gretel Killeen greets 22 participants in a third incarnation of devious reality format.

Gretel Killeen debuts as host of The Traitors Season 3 in early August on 10.

22 “infamous Aussies” will compete on the series, filmed by South Pacific Pictures in New Zealand and competing for a prize worth up to $250,000.

Everyone arrives as equals, but once Gretel selects her Traitors to hide in plain sight, it is up to the Faithfuls to work out who they can trust… before their time before their fate is sealed.

When everyone’s a suspect and trust is on borrowed time, even the most harmless comment could have deadly consequences.

Joining Gretel at the Round Table are famous faces from some of Australia’s biggest reality shows, including Ian “Dicko” Dickson and Cosima De Vito from Australian Idol, Gamble Breaux from The Real Housewives of Melbourne, Krissy Marsh from The Real Housewives of Sydney, Kween Kong and Rhys Nicholson from Drag Race Down Under, Shane Gould, Kirby Bentley, Henry Nicholson and AJ Antonios from Australian Survivor, Keira Maguire and Alex Nation from The Bachelor, and Cam Merchant from Married At First Sight.

Also entering Gretel’s manor are Rachael Evren and Claudia Bonifazio from Love Island Australia, Josh Packham and Luke Packham from Love Island Australia and The Block, Alvin Quah from MasterChef Australia, Manaaki Hoepo from Aussie Shore, Tully Smyth from Big Brother, Lawson Mahoney from Made In Bondi, and musician Rob Farnham, son of Aussie music legend John Farnham.

They have faced some of the toughest challenges reality TV has thrown their way, but nothing has prepared them for what’s in store inside Gretel’s manor.

The Traitors is a game of strategy, suspicion and spectacular betrayal, where charm is a weapon, trust is risky, and every smile could be hiding a dark secret.

One thing is certain: this August, being good will get you nowhere. The Traitors is produced for Network 10 by South Pacific Pictures. The Traitors (Dutch title: De Verraders) was created and developed by IDTV in cooperation with RTL Creative Unit.

All3Media International is responsible for the international distribution of the format and tape sales.

7:30pm Tuesday, 4 August on 10.

Updated.