This text is a summary of various book details, including the language, format, number of pages, dimensions, and ISBN of various editions of a novel. It also mentions the publisher, release date, translator, and genre of the book. The book features detective Hércules Poirot and a mystery involving a woman who receives a accusatory letter from him. The novel is an addictive psychological thriller with unresolved mysteries and spooky tales, according to the final text snippet.