Sleep with one eye open tonight... Join us as we explore the horrifying reality of convicted murderers who've been released and killers who were never caught. From calculated predators like Charles Sobhraj and Karla Homolka who walked free after serving their sentences, to elusive monsters like The Zodiac Killer and The Highway of Tears Killer who continue to haunt our nightmares. Which of these at-large killers sends chills down your spine?
