DI Colette Cunningham's no nonsense approach to policing has earned her the respect of her Merseyside Police colleagues. She seems unflappable, until she gets a call from the Garda in Dublin after the body of a young woman is discovered.
故事发生在1805年，皮埃尔伯爵（保罗·达诺 Paul Dano 饰）和千金小姐海伦（塔彭丝·米德尔顿 Tuppence Middleton 饰）结为夫妻，然而两人却并非情投意合，因此婚后生活并不十分幸福。安德烈（詹姆斯·诺顿 James Norton 饰）是皮埃尔的好友，一次偶然中，他邂逅了名为娜塔莎（莉莉·詹姆斯 Lily James 饰）的美丽贵族小姐，两人一见钟情，很快便走到了一起。
A private jet crashes into woodland outside London. Among the passengers is a former U.S. Ambassador. Thomas investigates the apparent suicide of a successful businessman, finding unexpected connections to the plane crash.