- Original title: Sirli, Siim and the Secrets
- Illustrator: Ilmar Trull
- Translator: Consuelo Rubio Alcover
- Language: Spanish
- Siruela
- 2024, 240 pp
- ISBN: 9788419942135
- storybook, fiction
- Age: 12+
El sorprendente viaje a los mundos secretos
