In 1984, Günther Stoll became increasingly convinced that unidentified people were planning to harm him. One night, he suddenly wrote the mysterious sequence “YOGTZE,” crossed it out, and left home. After collapsing briefly at a pub, he disappeared for several hours before visiting an elderly acquaintance and warning that something terrible would happen that night.

Hours later, Stoll was found naked and critically injured inside his crashed Volkswagen near the A45 Autobahn. He reportedly claimed that four unknown men had been in the vehicle with him. For decades, investigators suspected that he had been run over elsewhere, placed inside his car, and abandoned after a staged crash. The missing hours, his unexplained fear, and the strange YOGTZE message fueled theories involving murder, espionage, organized crime, and coded communication.

A modern review of the evidence later changed the official interpretation. In 2025, German authorities concluded that Stoll most likely died in a single-vehicle accident and that his injuries could have been caused by the crash itself. No reliable physical evidence confirmed the presence of other men.

Although the suspected murder may have been explained, the meaning of YOGTZE, Stoll’s missing movements, and the source of his fear remain unknown.