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On the banks of the Ardèche, near Vallon-Pont-d'Arc, kayakers find the body of the museum president of a recently discovered Paleolithic cave. A 40,000-year-old carved stone was embedded in his neck. To investigate, Captain Manon Ferret-Duval of the research section teams up with her counterpart Riad Lekcir. They must overcome a shared past: she is convinced that her partner's older brother is responsible for the murder of her parents in 1994. Riad has no doubt that Kamel, now deceased, is innocent.

Le Secret de la grotte (2023) streaming availability varies by region. Check Netflix, Prime Video, Disney+, and other major platforms. It may also be available for digital rental or purchase on Amazon, Apple TV, or Vudu.
On the banks of the Ardèche, near Vallon-Pont-d'Arc, kayakers find the body of the museum president of a recently discovered Paleolithic cave. A 40,000-year-old carved stone was embedded in his neck. To investigate, Captain Manon Ferret-Duval of the research section teams up with...
Le Secret de la grotte (2023) was directed by Christelle Raynal. The film is a TV Movie, Thriller production with a runtime of 1h 31m, rated 6.0/10.
Le Secret de la grotte runs 1h 31m (91 minutes total). Audience rating: 6.0/10 from 16 votes. Genre: TV Movie, Thriller.
Le Secret de la grotte is rated 6.0/10 by 16 viewers — decent with mixed reception. A good pick for TV Movie and Thriller fans.