It is 1940 and the bombs are falling thick and fast on London. The royal family must do all they can to assure the British public of their solidarity. But what of the two young princesses? Meanwhile Celia Nashe is delighted when she finally gets her long-awaited transfer to MI5. But whatever she was expecting of her mission for the war effort it wasn't this. A crumbling castle in remote rural Ireland playing nursemaid to two girls. Questions are being asked by the locals about the identities of Celia's secret charges. And when a dead body turns up at the castle gates it will take every effort to uncover the truth and to stop it from coming to light.