https://www.onthetrailofdelusion.com/post/richard-case-nagell-s-stasi-fileRichard Case Nagell's Stasi File Nagell was arrested in June 1968 by East German border guards because he lacked a transit visa to travel to West Berlin. At first, they suspected he was a CIA agent on an espionage mission. But they soon realized that he had suffered brain damage in a 1954 plane crash and that everything he had told them about the CIA and the JFK assassination just wasn't true. They then released him.
Here is his complete Stasi file along with a google translation, and a copy of my presentation to JFK Lancer from last weekend.