Bright young things required for big project

Six young people respond to the advert in Media Guardian all clever, all disaffected with their lives, all looking for an escape. What they least expect is to find themselves prisoners on an island, at the mercy of who Their needs are well provided for with a comfortable house and provisions but there's no telephone, no television and no way to escape. The bright young things have to start working out why they're there and how to get away before it's too late