Which J.K. Rowling novel was published first under the title The Casual Vacancy?

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

Little, Brown published the novel on 27 September 2012. It is a contemporary social novel set in the fictional English village of Pagford, where the sudden death of parish councillor Barry Fairbrother creates a vacant seat on the local council. The resulting political contest exposes tensions involving class, poverty, addiction, and family life.

The book was not a fantasy novel and was separate from the Harry Potter story world. Its title refers to the vacant position created by Fairbrother’s death, rather than to an open job in a magical institution. The novel was adapted into a three-part BBC television drama broadcast in 2015.