An investigative deep dive true crime podcast about the disappearance of the two teenagers, Karin and Brigitte, while on a bicycle tour across Switzerland. But this was only the beginning. Finally having found the bodies, the police were almost daily confronted with stunning new evidence and puzzling testimonials. One of the most mysterious and horrific murder cases to ever occur in Switzerland.

Important Update: The website thecrystalcavemurders.com has been replaced by swissmurdermysteries.com

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Author & Host

• Rudolph Isler

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• Playground Media Productions Ltd.