What is the title of the first Cormoran Strike novel credited to Robert Galbraith?

The first Cormoran Strike novel credited to Robert Galbraith is The Cuckoo’s Calling. It was published in 2013 and introduces the private investigator Cormoran Strike.

The novel begins after the death of model Lula Landry, whose case is initially treated as suicide. Strike is hired to investigate the circumstances, and Robin Ellacott joins his office as a temporary secretary. Their professional partnership becomes a continuing feature of the later books.

The Cuckoo’s Calling was initially presented as the work of Robert Galbraith. Rowling’s authorship was disclosed after a literary analysis and subsequent reporting identified her as the writer. The later series titles include The Silkworm, Career of Evil, Lethal White, Troubled Blood, The Ink Black Heart, and The Running Grave, so those titles belong to later investigations rather than the opening case.