Tomb of Ancients by Madeleine Roux

The war between old gods and monsters comes to a thrilling climax in this final book in the “darkly delightful”* House of Furies series, from the New York Times bestselling author of Asylum. (*Publishers Weekly)

Free from the nightmares of Coldthistle House, Louisa and her friends have taken up a posh new London residence. But there’s no rest for the wicked. Religious zealots from the shepherd’s flock are gathering in the city, and ominous warnings are being left on Louisa’s doorstep. With the evil influence of her father’s spirit growing stronger—trying to take over—Louisa knows she will be forced to pick a side in the coming war between the old gods, whether she’d like to or not.

To save herself, Louisa is desperate enough to do whatever it takes—even if it means returning to Coldthistle House and striking another deal with Mr. Morningside. To uphold her end of the bargain, Louisa will have to rejoin his supernatural staff to venture to a gateway between worlds, a place of legend: the Tomb of Ancients. But, as always, there’s a catch…