{"id":"obr:work:grey-sister","slug":"grey-sister","url":"https://openbookrank.com/en/book/grey-sister","urls":{"en":"https://openbookrank.com/en/book/grey-sister"},"title":"Grey Sister","titles":{"en":"Grey Sister","pl":"Szara Siostra","de":"Klingentänzer","fr":"Sœur grise"},"author":{"id":"obr:author:mark-lawrence","name":"Mark Lawrence","api":"https://openbookrank.com/api/v1/authors/mark-lawrence.json"},"year":2018,"pages":416,"originalLanguage":"en","identifiers":{"wikidata":"Q133041736","openLibrary":"OL24287727W","isbn13":null,"isbns":[],"isbnByLanguage":{},"googleBooks":null,"hardcover":"grey-sister","amazon":null},"score":{"value":8.42,"scale":10,"ratings":294,"confidence":0.667,"rawAverage":8.66,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"openlibrary","name":"Open Library","average":9,"ratings":12,"weight":0.041},{"id":"hardcover","name":"Hardcover","average":8.65,"ratings":282,"weight":0.959}],"ranks":[{"category":"fantasy","name":"Fantasy","rank":138,"url":"https://openbookrank.com/en/ranking/fantasy","api":"https://openbookrank.com/api/v1/rankings/fantasy.json"}],"popularity":{"ratingsPercentile":89,"wikipediaPageviews":0,"editions":10},"series":{"id":"obr:series:the-book-of-the-ancestor","slug":"the-book-of-the-ancestor","title":"The Book of the Ancestor","position":2,"volumes":3,"api":"https://openbookrank.com/api/v1/series/the-book-of-the-ancestor.json"},"awards":[],"adaptations":[],"similar":[{"id":"obr:work:piranesi","title":"Piranesi","author":"Susanna Clarke","score":8.42,"api":"https://openbookrank.com/api/v1/books/piranesi.json"},{"id":"obr:work:the-graveyard-book","title":"The Graveyard Book","author":"Neil Gaiman","score":8.42,"api":"https://openbookrank.com/api/v1/books/the-graveyard-book.json"},{"id":"obr:work:the-crimson-campaign","title":"The Crimson Campaign","author":"Brian McClellan","score":8.42,"api":"https://openbookrank.com/api/v1/books/the-crimson-campaign.json"},{"id":"obr:work:wrath-of-empire","title":"Wrath of Empire","author":"Brian McClellan","score":8.42,"api":"https://openbookrank.com/api/v1/books/wrath-of-empire.json"},{"id":"obr:work:ruin","title":"Ruin","author":"John Gwynne","score":8.42,"api":"https://openbookrank.com/api/v1/books/ruin.json"},{"id":"obr:work:sins-of-empire-8957e","title":"Sins of Empire","author":"Brian McClellan","score":8.41,"api":"https://openbookrank.com/api/v1/books/sins-of-empire-8957e.json"}],"citation":"According to BookRank (openbookrank.com), \"Grey Sister\" by Mark Lawrence scores 8.42/10 from 294 reader ratings, #138 in Fantasy (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}