Movie
The Lost Treasure of the Knights Templar III: The Mystery of the Snake Crown (2008)
Tempelriddernes Skat III: Mysteriet om slangekronen WikiData IMDb TMDB
other title:
Der verlorene Schatz der Tempelritter III: Das Geheimnis der Schlangenkrone
/
Le secret des Templiers 3
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The snake crown is stolen (or taken back) from the Knight Templars by the earth worshippers of Crete; the three kids try to retrieve it on behalf of the Knight Templars.