Harry Potter author JK Rowling's first novel for adults hit the shelves on Thursday with reviewers giving the gritty tale a mixed reception.
Several reviewers said the eagerly awaited work was a dull read in parts despite scenes of sex and drugs, and Rowling's most vivid writing was on the familiar ground of children pitted against the power of adults.
The Mirror tabloid labelled it Harry Potter and the Goblet of Filth, warning that Rowling was "sure to face stern criticism" for its liberal use of obscene language.
Other reviewers hailed Rowling's foray into books for adults. In the Independent, Boyd Tonkin called it a "song of freedom" after Rowling's seven books about the boy wizard.
Allison Pearson wrote in the Daily Telegraph that the novel was "sometimes funny, often startlingly well observed, and full of cruelty and despair".
Fans were keen to get their hands on the novel at Foyles book shop in London's Charing Cross Road.
Rhiane Jones, 29, from Wood Green in London, said: "Harry Potter was a large part of the experience of growing up so I was quite curious about what she'd produce. She may not be the most stylish user of language but she's an amazing storyteller. It will be a good read."