Roberto Succo, Killer with Eyes of Ice, escaped from a psychiatric facility and evaded captivity, committing countless crimes across Europe.
Mexico City police were hunting a male serial killer, until they caught woman red-handed: retired Lucha Libre wrestler, Juana Barraza.
Bruno Lüdke confessed to 84 murders and as punishment became the subject of medical experiments. However, many people believe he was innocent. Was justice served?
Alexander Spesivtsev tortured and murdered more than 80 people. His mother took it upon herself to dispose of them piece by piece in the Aba River.
Was The Monster of Florence acting on orders of a cult or a Sardinian crime family? Could he also be the elusive American Zodiac Killer?