What was the name of J.K. Rowling’s first published adult crime novel under her pseudonym?

J.K. Rowling’s first published adult crime novel under her pseudonym was The Cuckoo’s Calling.

The novel was published in April 2013 under the name Robert Galbraith. It introduces private investigator Cormoran Strike, who investigates the death of model Lula Landry in London. The book combines a murder investigation with a detailed portrait of the people surrounding the victim.

The pseudonym was initially presented as a new male author. Rowling’s identity was revealed several months after publication, after a linguistic analysis and subsequent reporting connected her with the book. The revelation caused sales to rise sharply and brought renewed attention to the novel.

The Cuckoo’s Calling is the first book in the Cormoran Strike series. Its sequels include The Silkworm, Career of Evil, Lethal White, Troubled Blood, The Ink Black Heart, and The Running Grave. Rowling continues to publish that crime fiction under the Robert Galbraith name.