Thea Stilton and the great tulip heist
- New York : Scholastic, 2013
- 158 p. : col. ill.
- Geronimo Stilton .
Attending an art class in the Netherlands, Violet journeys through the flower gardens, windmills and canals of Holland to investigate the untimely disappearance of her friend's father, a renowned botanist whose absence is linked to a rare black tulip.