Based on the novels written by J.K. Rowling under the pseudonym Robert Galbraith, C.B. Strike follows a war veteran-turned-private detective (Tom Burke) who uses his unique insight and background to solve complex crimes that have stumped the police. He's assisted by his protégé Robin Ellacott (Holliday Grainger). The first three episodes adapt The Cuckoo's Calling, the first book in the trilogy. The remaining four episodes of the miniseries tackle the two remaining books, with each covering two one-hour episodes.