Bobby lives a reckless life smoking, drinking, and stealing cars in Dublin. So his mother moves the family to the country. But Bobby suspects their cottage might not be as quaint as it seems. And spooky details of the history of their little cottage gradually turn Bobby into a detective of night creatures real and imagined.

As seventeen-year-old Jill Jekel and classmate Tristen Hyde work together on a chemistry project, hoping to win a scholarship for her and a cure for his curse, they also uncover family secrets and a chemistry of their own.

In 1888, twelve-year-old Will Henry chronicles his apprenticeship with Dr. Warthrop, a New England scientist who hunts and studies real-life monsters, as they discover and attempt to destroy the Wendigo, a creature that starves even as it gorges itself on human flesh.

In 1888, twelve-year-old Will Henry chronicles his apprenticeship with Dr. Warthrop, a scientist (cryptozoologist) who hunts and studies real-life monsters, as they discover and attempt to destroy a pod of Anthropophagi. The creatures in this and the following two entries in this series are treated simply as undiscovered animals, not supernatural beings.

When his twin brother falls ill in the family's chateau in the independent republic of Geneva in the eighteenth century, sixteen-year-old Victor Frankenstein embarks on a dangerous and uncertain quest to create the forbidden Elixir of Life described in an ancient text in the family's secret Biblioteka Obscura.

Since the mysterious death of four family members, the superstitious Merricat Blackwood, her ailing uncle Julian, and agoraphobic sister Constance have lived in a bizarre but contented state of isolation. But when cousin Charles arrives in search of the Blackwood fortune, a terrible family secret is revealed.