Strike (also known as C. B. Strike internationally) 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, after receiving an advance premiere at the British Film Institute on 10 August 2017.The programme follows Cormoran Strike (Tom Burke), a war veteran turned private detective operating out of a tiny office in London's Denmark Street, who uses his unique insight and his background as a Special Investigation Branch investigator to solve complex cases that have eluded the police along with his assistant, subsequently business partner, Robin Ellacott (Holliday Grainger).Fifteen episodes across five series have been broadcast to date, each series adapting the novels The Cuckoo's Calling (2013), The Silkworm (2014), Career of Evil (2015), Lethal White (2018), and Troubled Blood (2020), respectively. A sixth series, based on The Ink Black Heart (2022), is set to start shooting in February 2024.The programme premiered on 1 June 2018 in the United States on Cinemax and in Canada on HBO Canada. Following the fourth series, the programme was exhibited in the United States on HBO.