Alex Stern made it to hell and back more than once, but this time she left the door open behind her. Demons are creeping through the streets of New Haven and the Yale campus, feeding on the souls of the living, terrifying the dead. To stop it, they’ll have to reach deep into the secrets of Yale and its societies, and discover the truth hidden in Alex’s own blood. But for the first time in her life, she won’t have to face the fight alone. Dawes, Turner, Mercy and even Tripp will have a role to play, none more so than Alex’s mentor Darlington, the golden boy who lived so long in her head, now back in the flesh and cursed with dangerous powers of his own. Hell itself is stalking the delegates of Lethe House, and they’re all about to learn that demons don’t play by human rules.

In a shabby house, on a shabby street, in the new capital of Madrid, Luzia Cotado uses scraps of magic to get through her days of endless toil as a scullion. But when her scheming mistress discovers that the lump of a servant cowering in the kitchen is actually hiding a talent for little miracles, she demands Luzia use those gifts to improve the family's social position. What begins as simple amusement for the nobility takes a perilous turn when Luzia garners the notice of Antonio Pérez, the disgraced secretary to Spain's king. The king is desperate for any advantage in the war against England's heretic queen --- and Pérez will stop at nothing to regain his favor. As Luzia's notoriety grows, so does the danger that her Jewish blood will doom her to the Inquisition's wrath.

Find a gateway to the underworld. Steal a soul out of hell. A simple plan, except people who make this particular journey rarely come back. But Galaxy “Alex” Stern is determined to break Darlington out of purgatory --- even if it costs her a future at Lethe and at Yale. Forbidden from attempting a rescue, Alex and Dawes can’t call on the Ninth House for help, so they assemble a team of dubious allies to save the gentleman of Lethe. Together, they will have to navigate a maze of arcane texts and bizarre artifacts to uncover the societies’ most closely guarded secrets, and break every rule doing it. But when faculty members begin to die off, Alex knows that something deadly is at work. If she is going to survive, she will have to reckon with the monsters of her past and a darkness built into the university’s very walls.

Galaxy “Alex” Stern is the most unlikely member of Yale’s freshman class. Raised in the Los Angeles hinterlands by a hippie mom, Alex dropped out of school early and into a world of shady drug-dealer boyfriends, dead-end jobs and much, much worse. In fact, by age 20, she is the sole survivor of a horrific, unsolved multiple homicide. But at her hospital bed, Alex is offered a second chance: to attend one of the world’s most prestigious universities on a full ride. She arrives in New Haven tasked by her mysterious benefactors with monitoring the activities of Yale’s secret societies. Their eight windowless “tombs” are the well-known haunts of the rich and powerful, but their occult activities are more sinister and more extraordinary than any paranoid imagination might conceive.