Rue Umberwick is a curious woman with a seemingly insatiable thirst for knowledge. When she lands her dream job as a personal librarian for the handsome yet aloof Duke of Penrith, she doesn't think her life can get much better.

But the Duke's private library and gallery are more than she expected. A collector of mostly ill gotten and supposedly cursed objects, the Duke has entrusted Rue to keep his secrets.

There is said to be a book containing incantations and rituals to bring upon the cataclysm that could destroy the world hidden among his collection.

With the begrudging help of her disgruntled new winged ally Corvus, Rue finds herself tasked with finding the book and destroying it before it slides into the wrong hands.

However, her unending well of curiosity pulls her into a world of chaos, upending her entire life as she once knew it.

Can she complete her task before the darkness catches up to her? Or will she hold the responsibility of a cruel fate in her hands?