Season of Skulls

Season of Skulls continues Hugo Award–winning author Charles Stross's
Lovecraftian Laundry Files series.
Welcome to the sunlit uplands of the 21st century! Britain's avuncular Prime
Minister is an ancient eldritch god of unimaginable power. Crime is plummeting as
almost every offense is punishable by death. And everywhere you look, there are
people with strange powers, some of which they can control, and some, not so
much.
Hyperorganized and formidable, Eve Starkey defeated her boss, the louche
magical adept and billionaire Rupert de Montfort Bigge, in a supernatural duel to
the death. At least, she has reason to hope he's dead. But though she's now in
charge of the Bigge Corporation, she's not free of him yet. Through the
fecklessness of her brother Imp, combined with the intricate feudal law of a tiny
Channel Island, it would appear that unbeknownst to her, she was married to
Bigge—and that proving his death and releasing herself from his arcane bindings
will take years and cost millions.
Then an emissary of the Prime Minister arrives with an offer that she absolutely
can't … well, you know.