Somewhere, a demon runs amok, loosed in a museum and now free in the London sewers.
In desperation, the authorities summon metaphysician Augustus Dexter Derlyth to solve this trouble.
Then it gets worse.
What evils lurk in the shadows, where nobody dares stride?
Ill Tidings, the first of a new Occult Detective series set in 1920s London, where all is not as it seems. Be sure to look for Dream Thief next.