The first series was a major hit for BBC One regularly attracting audiences of more than 2 million viewers despite its early morning time-slot. On 24th July 2018 BBC Daytime announced that it had commissioned a second series of the show from Chalkboard TV for 2019 that would include 10 new cases and 10 follow-up editions giving updates on those cases examined in series 1.
On Friday, 26th July 2019, the BBC announced that it had commissioned a 10 episode third series of the award winning programme.