Thea Stilton #18 Thea Stilton and the Great Tulip Heist
While Violet is taking an art class in the Netherlands, her friend's father mysteriously disappears! The missing mouse is a renowned botanist — and his disappearance is linked to the rare black tulip. The Thea Sisters are eager to help find him. It's an adventure through the windmills, flower gardens, and canals of Holland!