The first in the bestselling Cogheart Adventures series, where mayhem, murder and mystery meet in a gripping Victorian world of fantastical imagination.

Some secrets change the world in a heartbeat.

Lily's life is in mortal peril. Her father is missing and now silver-eyed men stalk her through the shadows. What could they want from her?

With her friends - Robert, the clockmaker's son, and Malkin, her mechanical fox - Lily is plunged into a murky and menacing world. Too soon Lily realizes that those she holds dear may be the very ones to break her heart...