Johann “Jack” Unterweger, jinka janm 16 August 1950 ko Austria mein hua, ek atyant khatarnak serial killer the. Unki maa ek veshya thi aur pita ek American sainik, jinse unki kabhi mulakat nahi hui.Bachpan se hi unka jeevan kashton se bhara tha. Unhen apne sharaabi dada ke paas chhod diya gaya tha. Solah saal ki umar se hi unhone chote-mote apradh karna shuru kar diya aur dhire-dhire unke apradh badhte gaye.Unterweger ki kahani darshati hai ki kabhi-kabhi sabse bhayankar apradhi bhi samaj ke beech normal dikhne ka dhong kar sakte hain.