Once upon a time, in the heart of the old town of La Rochelle, there was an orphanage. There lived Gervaise, an eleven-year-old girl who was extremely bored. Now, dear reader, in just a few pages, Gervaise will have the most exceptional encounter.

Soon, she will dart from roof to roof in the night, hair blowing in the wind, facing the worst dangers alongside the proud brigands of the Company of Claws, shouting into the night their famous rallying cry: "Let’s chase, cats, with...