Despite extensive searches of the Hagen home, surrounding forests, and local lakes, no body and no definitive forensic evidence of a struggle or a crime scene have ever been found. Pop Culture Impact

When a billionaire's wife vanishes, Norwegian police must deal with the frenzied press and deceitful informants to find the truth.

Written in broken Norwegian, the note was highly sophisticated in its technical demands regarding cryptocurrency, yet left behind very little physical evidence.

Investigators have spent years trying to track the digital movements of the "kidnappers," but the privacy-centric nature of Monero has made it nearly impossible to identify the wallet holders.