Based on a Swedish crime novel, 'Kråkflickan' by Eriksson Aklander Sundquist, with setting transposed to the UK. In 'Coffee with Slash' on Ola Englund's Youtube Channel 'Ola Englund', May 3rd 2024, Slash mentions he obtained the rights to the novel, and then sold them on to Buccaneer, who are producing this show, with Slash stating he is now working on composing and performing the score.