Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Secret of Whale Island | 2009 | Thea Stilton | Buy |
| 2 | Revenge of the Lizard Club | 2013 | Thea Stilton | Buy |
| 3 | The Treasure of the Viking Ship | 2014 | Thea Stilton | Buy |
| 4 | Catching the Giant Wave | 2015 | Thea Stilton | Buy |
| 5 | The Secret of the Waterfall in the Woods | 2016 | Thea Stilton | Buy |
| 6 | The Thea Sisters and the Mystery at Sea | 2016 | Thea Stilton | Buy |
| 7 | A Song for the Thea Sisters | 2017 | Thea Stilton | Buy |
| 8 | The Thea Sisters and the Secret Treasure Hunt | 2017 | Thea Stilton | N/A |
The Thea Stilton Graphic Novels present the Thea Sisters in full-color comic panels across eight books published between 2009 and 2017. The Secret of Whale Island kicked off the series, followed by stories involving Viking ships, giant waves, and mysteries at sea.
These graphic novels are shorter reads than the chapter books and rely on visual storytelling to carry the action. They work well as an entry point for younger readers or reluctant readers who connect more with illustrated formats. Each book is a standalone story.