It should have been the perfect summer. Sent to stay with her late mother's eccentric family in London, sixteen-year-old Joan is determined to enjoy herself. She loves her nerdy job at the historic Holland House, and when her super cute co-worker Nick asks her on a date, it feels like everything is falling into place.

Then a Good Samaritan attempt gone wrong sends Joan spinning through time, and her life quickly begins to unravel. Her family aren't just eccentric: they're monsters, with terrifying, hidden powers. And Nick isn't just a cute boy: he's a legendary monster slayer, who will do anything to bring them down.

As she battles Nick, Joan is forced to work with the beautiful and ruthless Aaron Oliver, heir to a monster family that hates her own. She'll have to embrace her own monstrousness if she is to save herself, and her family. Because in this story...

...she is not the hero.