“Cat detective stories”, “cat horror novels”, “cat thrillers”... But what about a “cat adventure novel”? Before you are the fascinating adventures of the St. Petersburg cat Martyn, a philosopher and a smart guy, a hedonist and a Casanova. The adventures are dangerous - funny, very mischievous - and breathtaking. The crime stories that Martyn inevitably gets drawn into are always confusing and mysterious. Only a cat can truly find the thread of truth in these tangles! Because from time immemorial, haven’t cats loved to play with balls?