- Original title: Morten, Emilie, and the Lost Worlds
- Illustrator: Marja-Liisa Plats
- Translator: Anna Michalczuk-Podlecki
- Language: Polish
- 2024, 192 pp
- ISBN: 97883966162
- Age: 12+
- storybook, fiction
For more information or copyrights, please contact ulla.saar@elk.ee