- Original title: Morten, Emilie, and the Lost Worlds
- Illustrator: Marja-Liisa Plats
- Translator: Maima Grīnberga
- Language: Latvian
- 2021, 176 pp
- ISBN: 9789984238623
- Age: 12+
- storybook, fiction
For more information or copyrights, please contact ulla.saar@elk.ee