After the death of Ellie's uncle Alfie, an infamous magician and occult detective, the 72 devils of the Ars Goetia are mysteriously freed from their infernal realm. It's now up to her to track down each of these demons and damn them right back to Hell... using holy water, conjuration, or just her trusty, rusty claw hammer.
Meanwhile Dora, a detective traumatized by the same events as Ellie, is suspicious of the untimely death of Alfie. As new terrors unfold, the two witness strange changes to the political landscape of Britain: a gibbering madness infecting the population.
In a final showdown between the devils and the angels attached to Theo’s strings, Ellie is seemingly alone against their deranged, infernal and celestial screaming.
But allies may be ready to fly in at any moment… revealing that The Rules can in fact be broken, and El’s flesh and blood will play a fateful part in the destiny of hell.