The double-act of Jago and Litefoot worked so well that the BBC considered giving them a spinoff series. Big Finish Productions later produced an audio series called "Jago & Litefoot: Investigators of Infernal Incidents", which was released between 2010 and 2018. Both actors were reprising their characters.
This episode takes place in London in 1889.
This episode was watched by 10.1 million viewers on its original transmission.