Team up 10 people in a series of challenges. If only it were that easy. The natural risk of such a design is obvious. Discover the mole in the first week and there's no more show. Instead, this series opts to hide the rat permanently.
Weekly games fund a cash pot and reveal hints at the mole.
Then, the players must answer a series of questions regarding their suspicions. There's nothing lost by jumping in now, with only two weeks, four players and maybe a hint of drama left. You might dig it once . . .