Mrs. Sidhu is a high-end caterer with a taste for crime. Recently widowed, she juggles her new catering business with encouraging her wayward son Tez to find his passion, all while serving up justice to those who believe they are above the law. Her forays into sleuthing see her form an unofficial partnership with long-suffering divorcee DCI Burton who reluctantly accepts that together they’re an unbeatable crime-fighting duo, much to the bemusement of his partner, DS Mint.

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 civilization. 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.