The Prisoner in the Opal

The Prisoner in the Opal
First edition (UK)
AuthorA. E. W. Mason
LanguageEnglish
SeriesInspector Hanaud
GenreDetective fiction
PublisherHodder & Stoughton (UK)
Doubleday Doran (US)
Publication date
1928
Media typePrint
Pages344
Preceded byThe House of the Arrow 
Followed byThey Wouldn't Be Chessmen 

The Prisoner in the Opal is a British detective novel by A.E.W. Mason, serialised in The Pall Mall Magazine and published in book form in 1928. It is the third full-length novel in Mason's Inspector Hanaud series, and the only one to feature the occult as a significant plot point.