As World War I rages across Europe, a military officer is brutally murdered in a remote English country house. Lord Strangford is the only suspect.

To clear his name, Lily must unravel the bizarre secrets that surround the corpse. It's a quest that takes her from the besieged Yorkshire coast to the heart of the empire as a brilliant and relentless police inspector haunts her every move.

But the dead man isn't who he seemed to be. The search for truth—and the real killer—plunges Lily into a game of secrets tied to the highest echelons of the government. To expose the heart of it, she must pull together friends scattered by loss and conflict, pushing the limits of an occult power she's far from understanding.

The fate of the war might just hang in the balance...along with the life of the man Lily loves.