The Cuckoo's Calling is the first book in the Cormoran Strike series, written by Robert Galbraith (pseudonym of J.K. Rowling). It introduces private detective Cormoran Strike, who is hired to investigate the mysterious death of a supermodel. As Strike delves into the glamorous and dangerous world of fashion, he uncovers a web of secrets and lies. The Cuckoo's Calling is a compelling and well-crafted mystery that showcases Rowling's talent for storytelling in a different genre.