{"id":"obr:work:halts-peril-rangers-apprentice-book-9","slug":"halts-peril-rangers-apprentice-book-9","url":"https://openbookrank.com/en/book/halts-peril-rangers-apprentice-book-9","urls":{"en":"https://openbookrank.com/en/book/halts-peril-rangers-apprentice-book-9"},"title":"Halt's Peril (Ranger's Apprentice Book 9)","titles":{"en":"Halt's Peril (Ranger's Apprentice Book 9)"},"author":{"id":"obr:author:john-flanagan","name":"John Flanagan","api":"https://openbookrank.com/api/v1/authors/john-flanagan.json"},"year":null,"pages":null,"originalLanguage":null,"identifiers":{"wikidata":null,"openLibrary":"OL25667037W","isbn13":"9781446479292","isbns":["9781446479292"],"isbnByLanguage":{"en":"9781446479292"},"googleBooks":null,"hardcover":"halts-peril","amazon":{"en":"1446479293"}},"score":{"value":8.15,"scale":10,"ratings":170,"confidence":0.48,"rawAverage":8.29,"method":"bayesian-weighted-average","priorWeight":184,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"hardcover","name":"Hardcover","average":8.29,"ratings":170,"weight":1}],"ranks":[],"popularity":{"ratingsPercentile":86,"wikipediaPageviews":0,"editions":0},"series":null,"awards":[],"adaptations":[],"similar":[],"citation":"According to BookRank (openbookrank.com), \"Halt's Peril (Ranger's Apprentice Book 9)\" by John Flanagan scores 8.15/10 from 170 reader ratings (snapshot 2026-09-21).","snapshot":"2026-09-21","license":"CC-BY-4.0"}