What was J.K. Rowling’s first published book written for adults?

J.K. Rowling’s first published book written for adults was The Casual Vacancy.

Published in 2012, The Casual Vacancy is a standalone novel set in the fictional English village of Pagford. Its plot begins after the death of Barry Fairbrother, a parish councillor, creates an unexpected vacancy on the local council.

The novel examines class, poverty, addiction, family conflict, and political divisions within the community. Its subject matter and tone differ sharply from the Harry Potter fantasy series.

The book is separate from Rowling’s later crime novels, which were published under the name Robert Galbraith. It was also adapted into a three-part television drama by the BBC and HBO in 2015.