Damn Them All #2 — Simon Spurrier

Dora, a detective traumatized by the same recent supernatural events as Ellie, is suspicious of the untimely death of Alfieâ€"a man who helped her in desperate times.
As new terrors unfold, the two witness strange changes to the political landscape of Britain: a gibbering madness infecting the population.
Ellie fears the worst, and seeks the only thing she thinks can help.
A demon may be behind what's happened, one that predates even the Ars Goetia… and isn't so easy to control…