The mysterious boy who Lissy encounters at a deserted train station acts like he has known her all her life.

Unnerved by his unnatural beauty, she sets about uncovering the dark secret of the village of Hopesay Edge.

The boy, Larkspur, is a member of the Hidden, an ancient group of elven people and Lissy quickly finds herself fighting to escape from a powerful elven magic.

A bargain has been made that cannot be broken, and if the Hidden catch Lissy now, they will never let her go.