Willi Hengstler’s adaptation of Jack Unterweger’s autobiography.
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. Austrian psychiatrist Dr. Reinhard Haller diagnosed him with narcissistic personality disorder in 1994.
Unterweger was born in 1950 to Theresia Unterweger, a Viennese barmaid and waitress, and an unknown American soldier whom she met in Trieste. Some sources describe his mother as a prostitute. His mother was jailed for fraud while pregnant but was released and travelled to Graz where he was born. In 1953, his mother was again arrested and he was sent to Carinthia in southern Austria to live with his grandfather, whom he described as a violent alcoholic.