Ten pairs of contestants arrive at a Caribbean resort filled with glamour, opulence and deception. Each room has an identical briefcase. Inside one contains £250,000 cash, another contains the dreaded Early Checkout Card, and the rest are empty. Tension builds as each pair must try to uncover who has which case by playing compelling challenges, and as the "Whogotit" mystery ramps up, the couple with the cash must keep their case for eight days to win.