It's rare for someone to be labelled "the most arch-evil person who ever existed", but when the offences involve luring young boys into a van, overpowering and restraining them with wires, cords, and handcuffs, then beating, raping, sodomising and torturing them with pliers, knives, wire coat hangers, and ligatures, before ultimately strangling or bludgeoning the victims to death and abandoning their bodies near freeways - it's easy to understand why.

The depraved individualin question had an IQ of 121 and was a decorated war veteran, having received the Good Conduct Medal for his active five-month deployment in the Vietnam War.

He was also somebody with an extensive history of sexually assaulting and raping young boys, well before he was ever formally convicted of any crime.

Serial killerWilliam Bonin was initially sentenced in June 1969 to the Atascadero State Hospital as a sex offender with a mental disorder who was deemed amenable to treatment.

Throughout his period at the state hospital, he exhibited characteristics of antisocial personality disorder, sexual sadism disorder, and manic depression, and was categorised as an extreme sociopath who was highly likely to reoffend during episodes of psychotic breakdown.

By 1971, Bonin was moved to the California Medical Facility following being deemed 'unsuitable for further treatment' due to repeated sexual involvement with fellow inmates (two of whom had learning disabilities), reports theMirror US.

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Astonishingly, he was freed from prison in June 1974, after medical professionals determined he was "no longer a danger to the health and safety of others".

In December 1975, he was once more sentenced to serve one to 15 years at the California Men's Facility in San Luis Obispo, having pleaded guilty to charges of rape and forcible oral copulation of a minor and attempted abduction.

Source: Daily Express :: World Feed