旧友の招きでスタイルズ荘を訪れたヘイスティングズは到着早々事件に巻き込まれた。

嫌われ者の老退役大佐が殺された。しかも現場が村の牧師館の書斎だったから、ふだんは静かなセント・メアリ・ミード村は大騒ぎ。

Join world-famous detective Sherlock Holmes and his ever-loyal sidekick Dr. Watson as they embark on a series of daring adventures. Priceless jewels disappear from a hotel suite, a monstrous hound is spotted on the moors and a woman is murdered in a locked room. Can our brilliant hero solve these mysteries and more before disaster strikes? This thrilling collection brings 16 adventures of Sir Arthur Conan Doyle's most famous detective to life, adapted by award-winning children's fiction author Alex Woolf.

Captain Arthur Hastings, invalided in the Great War, is recuperating as a guest of John Cavendish at Styles Court, the "country-place" of John's autocratic old aunt, Emily Inglethorpe - she of a sizeable fortune, and so recently remarried to a man 20 years her junior. When Emily's sudden heart attack is found to be attributable to strychnine, Hastings recruits an old friend, now retired, to aid in the local investigation. With impeccable timing, Hercule Poirot, the famous Belgian detective, makes his dramatic entrance into the pages of crime literature.

大富豪ゴードン・クロードが戦時中に死し、莫大な財産は若き未亡人が相続した。戦後、クロード家の人々はまとまった金の必要に迫られながら、後ろ盾のゴードンを失くし窮地に立たされる。"あの未亡人さえいなければ" 一族の思いが憎しみへと変わった時……戦争が生んだ心の闇をポアロが暴く。