Bunzl, Peter

"Old secrets can weigh heavy when you want to fly. Invited to a spectacular show by Slimwoods Stupendous Traveling Skycircus, Lily, Robert, and mechanical fox Malkin can't wait to jump aboard. But behind the daredevil acts of the bewitching bird-girl and other performers, something sinister lurks. And soon, the watchful ringmistress, Madame Lyon-Mane, reveals a deadly plan for Lily. Could the secrets of Lilys past hold their only chance at escape from this terrible trap?"--Back cover.

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.