Jack Unterweger

Jack Unterweger was an Austrian serial killer who committed murders in several countries. After murdering an 18-year-old girl, he got a life sentence but became an author. His work gained the attention of the Austrian literary elite, who took it as evidence that he had been rehabilitated. So he then campaigned to get himself released after just 15 years. He then became a reporter and started reporting on his own crimes as he proceeded to kill at least 9 more people. After being convicted of an additional nine murders in 1994, he committed suicide in prison by hanging himself.