<DIV>Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship!<br><br>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, flowers, and canals of Holland!</div>