The Prince of Darkness has been given one last chance: he will be readmitted to the company of his fellow angels if he agrees to live out a human life. Highly sceptical (naturally), the Old Deal-maker negotiates a trial period – a summer holiday in a human body, with all the delights of the flesh. The body, though, turns out to be that of Declan Gunn, a depressed writer living in Clerkenwell, interrupted mid-suicide. Making the best of a bad situation, Luce himself takes to writing – to explain, to strip back the Biblical spin, to help us see the whole thing from his point of view. And to knock that Jesus off his perch.