The Cuckoo's Calling is a British crime drama television programme based on the book series Cormoran Strike by J. K. Rowling under the pseudonym Robert Galbraith. The programme was first broadcast on BBC One on 27 August 2017. Nineteen episodes across six series have been broadcast to date, each series adapting a novel: The Silkworm (2013), Career of Evil (2015), Lethal White (2018), Troubled Blood (2020), and The Ink Black Heart (2022) respectively. A seventh series, based on The Running Grave started filming in Autumn 2025, and is scheduled for broadcast on the BBC in 2026.