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The treasure hunters are back! Now the heroes, who have already uncovered the secret of the Cossack treasure, are heading to the picturesque Podillia. There is an ancient princely castle and gloomy labyrinths of underground caves. Once upon a time, the national avenger Ustym Karmeliuk walked in these lands. His enemies called him a robber. And somewhere there, Karmelyuk's companions hid a large diamond of unprecedented beauty. Of course, evil people are hunting for the treasure. They want to take not only the diamond, but also the whole castle. Will our heroes - Danilo, Bohdan, Lyonka and their new friends - be able to outrun the thieves and save the castle? Will they be able to solve all the robbers' riddles? What will the crazy ostrich named Football do this time? You will learn about all this in the new adventure detective story by Andriy Kokotiukha.

The book is available in the Yakaboo app for free reading in the PrivatBank library.