Ten strangers, drawn away from their normal lives to an isolated rock off the Devon coast. But as the mismatched group waits for the arrival of the hosts – the improbably named Mr and Mrs U.N. Owen – the weather sours and they find themselves cut off from civilisation. Very soon, the guests, each struggling with their conscience, will start to die – one by one, according to the rules of the nursery rhyme ‘Ten Little Soldier Boys’ - a rhyme that hangs in every room of the house and ends with the most terrifying words of all: '…and then there were none.'