
An in-depth look at the terrifying offenders whose crimes earned them rare life sentences; despite being imprisoned, these inmates go on to torture, kidnap and even kill.

Career criminal Michael Dutcher has continued his streak of violence and murder even behind bars.

Feared Aryan Warriors gang leader 'Mugsy' Williams was a one-man crime wave - even behind bars.

James Robertson is one of the most feared men in the US prison system; he murdered his cellmate, attacked a prison employee and doesn't hold back from getting what he wants.

Imprisoned after a fatal robbery, Craig Wissink kills a corrections officer in a brutal attack.