Johann Unterweger was an Austrian serial killer. While in prison, he wrote a bestselling autobiography titled, Fegefeur (Purgatory). In 1990, he convinced the prison system that he was a reformed man. The state released him on parole, and Unterweger became a literary celebrity. Four years later, he was found guilty of nine murders. Shortly after sentencing, he committed suicide by hanging.
Johann "Jack" Unterweger (16 August 1950 – 29 June 1994) was an Austrian serial killer who murdered prostitutes in several countries. First convicted of a 1974 murder, he was released in 1990 as an example of rehabilitation. He became a journalist and minor celebrity, but within months started killing again. He committed suicide following a conviction for several murders.
Jack Unterweger: author and sexual sadist; convicted of 10 murders; believed to have killed 12 women