A Hidden Vault Beneath New York. A Bloodline Awakening. A City on the Edge.

Ruby Baldwin returns to her family’s historic New York building hoping for a reset, but The Baldwin has secrets buried far below its polished floors. When Ruby accidentally awakens a hidden vault deep under the city, she stirs an ancient power tied to her own bloodline. Something in the dark feels her awakening, and the supernatural world she never believed in starts shifting toward her.

Galen arrives before the danger reaches her. He is a gargoyle Sentinel carved from living stone and sworn to protect the keeper of the vault. He is powerful, watchful, and unexpectedly human, with a loyalty that runs deeper than Ruby understands. As he brings her into the underground world of Sentinels, councils, and centuries-old magic beneath Manhattan, Ruby begins to uncover the truth about her inheritance.

Creatures known as the Ashen are crossing into New York, drawn to Ruby’s power and eager to claim her before she learns to use it. With Galen at her side, Ruby must embrace her role as the vault’s keeper and confront the forces hunting her. The barrier between realms is weakening, and if Ruby cannot master her lineage, the city above will fall to the ones who have waited in the shadows for far too long.