{"id":"obr:work:n-or-m","slug":"n-or-m","url":"https://openbookrank.com/en/book/n-or-m","urls":{"en":"https://openbookrank.com/en/book/n-or-m","pl":"https://openbookrank.com/pl/ksiazka/n-or-m","de":"https://openbookrank.com/de/buch/n-or-m","es":"https://openbookrank.com/es/libro/n-or-m","fr":"https://openbookrank.com/fr/livre/n-or-m","it":"https://openbookrank.com/it/libro/n-or-m","nl":"https://openbookrank.com/nl/boek/n-or-m","sv":"https://openbookrank.com/sv/bok/n-or-m","ja":"https://openbookrank.com/ja/hon/n-or-m","pt":"https://openbookrank.com/pt/livro/n-or-m","zh-hant":"https://openbookrank.com/zh-hant/tushu/n-or-m"},"title":"N or M?","titles":{"en":"N or M?","pl":"N czy M?","de":"Rotkäppchen und der böse Wolf","es":"El misterio de Sans Souci","fr":"N. ou M. ?","it":"Quinta colonna","pt":"M ou N?","nl":"N of M?","sv":"N eller M?","uk":"Н чи М?","ja":"NかMか","ko":"N 또는 M","zh":"密码","zh-hant":"密碼"},"author":{"id":"obr:author:agatha-christie","name":"Agatha Christie","api":"https://openbookrank.com/api/v1/authors/agatha-christie.json"},"year":1941,"pages":224,"originalLanguage":"en","identifiers":{"wikidata":"Q120595","openLibrary":"OL472130W","isbn13":"0006163017","isbns":["9788327150899","9781539171140","9782846343886","9783502515456","9788804519256"],"isbnByLanguage":{"es":"9781539171140","fr":"9782846343886","de":"9783502515456","it":"9788804519256"},"googleBooks":"wtkfAQAAIAAJ","hardcover":"n-or-m","amazon":{"en":"0006163017","es":"1539171140","fr":"2846343888","de":"350251545X","it":"8804519258"}},"score":{"value":7.51,"scale":10,"ratings":85,"confidence":0.366,"rawAverage":7.27,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"openlibrary","name":"Open Library","average":7.45,"ratings":11,"weight":0.129},{"id":"hardcover","name":"Hardcover","average":7.24,"ratings":74,"weight":0.871}],"ranks":[{"category":"crime","name":"Crime & mystery","rank":380,"url":"https://openbookrank.com/en/ranking/crime","api":"https://openbookrank.com/api/v1/rankings/crime.json"}],"popularity":{"ratingsPercentile":74,"wikipediaPageviews":18942,"editions":76},"series":{"id":"obr:series:tommy-tuppence-mysteries","slug":"tommy-tuppence-mysteries","title":"Tommy & Tuppence Mysteries","position":3,"volumes":5,"api":"https://openbookrank.com/api/v1/series/tommy-tuppence-mysteries.json"},"awards":[],"adaptations":[],"similar":[{"id":"obr:work:poirot-investigates","title":"Poirot Investigates","author":"Agatha Christie","score":7.51,"api":"https://openbookrank.com/api/v1/books/poirot-investigates.json"},{"id":"obr:work:the-labours-of-hercules","title":"The Labours of Hercules","author":"Agatha Christie","score":7.52,"api":"https://openbookrank.com/api/v1/books/the-labours-of-hercules.json"},{"id":"obr:work:the-bungalow-mystery","title":"The Bungalow Mystery","author":"Carolyn Keene","score":7.52,"api":"https://openbookrank.com/api/v1/books/the-bungalow-mystery.json"},{"id":"obr:work:they-do-it-with-mirrors","title":"They Do It with Mirrors","author":"Agatha Christie","score":7.5,"api":"https://openbookrank.com/api/v1/books/they-do-it-with-mirrors.json"},{"id":"obr:work:mrs-mcgintys-dead","title":"Mrs McGinty's Dead","author":"Agatha Christie","score":7.5,"api":"https://openbookrank.com/api/v1/books/mrs-mcgintys-dead.json"},{"id":"obr:work:thunderball","title":"Thunderball","author":"Ian Fleming","score":7.49,"api":"https://openbookrank.com/api/v1/books/thunderball.json"}],"citation":"According to BookRank (openbookrank.com), \"N or M?\" by Agatha Christie scores 7.51/10 from 85 reader ratings, #380 in Crime & mystery (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}