Hijinks, heists, and high-octane action in Jude Watson's new middle-grade blockbuster! On a foggy night in Amsterdam, a man falls from a rooftop to the wet pavement below. It's Archibald McQuinn, the notorious cat burglar, and he's dying. As sirens wail in the distance, Archie manages to get out two last words to his young son, March: "Find jewels." But March learns that his father is not talking about hidden loot. He's talking about Jules, the twin sister March never knew he had. No sooner than the two find each other, they're picked up by the police and sent to the world's worst orphanage. It's not hard time, but it feels like it. March and Jules have no intention of staying put. They know their father's business inside and out, and they're tired of being pushed around. Just one good heist, and they'll live the life of riches and freedom that most kids only dream about... Hold on to your pearls, because this summer, the world's youngest criminal masterminds are coming for you.