Island Морнезе in a channel Ла-манш. Once Knees conducted here with parents-archaeologists happy years. Now to him almost sixteen, and he a long ago already orphan. A mother perished in an accident, and a father drowned at-sea. Knee always had dim sense, that to his parents some secret is related. And on the eve of the sixteenth birthday a chance again to appear on an island Морнезе falls out him. A fellow wants to visit on ruins that old abbey, where he lived with parents and their comrades. But main - he doubts that his father died, and hopes though to find out something about his fate. Legend goes for a walk in these places, that cardinal Мазарини once hid surprizing riches on Морнезе, and three hundred years do not calm down attempts to find treasure, getting the name "Madness of Мазарини". In the same days, when Knees arrives on Морнезе in a summer camp for teenagers, from famous prison located on distant extremity of island, two prisoners run back. It hunts after treasure of Мазарини begins.More interesting facts about this book read in