Secret grandson:

“Don’t believe my grandpa was a serial killer”

Patrick A. (pictured above right) was not even three years old when Jack Unterweger - his grandfather - was taken into custody on suspicion of murdering eleven prostitutes.(Bild: Krone KREATIV/Unterweger: Jürgen Radspieler Enkel: zVg)

Patrick A. only found out at the age of ten that Jack Unterweger was his grandfather. Now, for the first time, the only, previously unknown grandson of the serial killer talks about his big family secret. Which - as he says - "has always had a strong influence on my life".

The young man, who is now serving time in Vienna's Josefstadt prison, appears agitated, sad and marked.