- Original title: Sirli, Siim and the Secrets
- Illustrator: Ilmar Trull
- Translator: Julija Potrč Šavli
- Language: Slovenian
- KUD Sodobnost International
- 2015, 196 pp
- ISBN: 9789616970181
- fiction, storybook
- Age: 10+
Sara, Simon in skrivnosti
