Join Thea Stilton and the Thea Sisters on an adventure
packed with mystery and friendship!
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