Quintessential Agatha Christie, this stylish thriller is set in the midst of a posh weekend party at an elegant country estate. All goes swimmingly until one of the guests fails to appear at breakfast - or anywhere else. Two top-drawer guests team up to solve several pesky problems: a couple of murders, stolen state secrets, and the motives behind a secret society called the Seven Dials. Sir John Gielgud adds a touch of inspired lunacy to this intricately plotted, witty romp.