It was published in the UK by Raven Books on 8 February 2018 () and in the US by Sourcebooks Landmark on 28 September 2018 () It has been translated into 28 languages, sold over 200,000 copies in the UK, and television rights have been optioned. In December 2020, Netflix announced that a seven-episode series was in production in the UK. In January 2023, it was reported that Netflix scrapped the project.
