Cogheart adventure

Follows Lily, Robert, and Malkin the mechanical fox as they race around steampunk, Victorian London trying to solve a mystery involving the criminal mastermind Jack of Diamonds and a family heirloom.

"When her father goes missing, thirteen-year-old Lily Hartman must team up with a clockmaker's son, Robert, and her mechanimal fox, Malkin, to solve the mystery of her father's disappearance and his world-changing invention, a perpetual motion machine called the Cogheart"--Provided by publisher.