
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.

After cold-blooded killer Leo Boatman murdered two campers, he went on the kill three inmates behind bars.

Jesse Con-ui's loyalty to the New Mexican Mafia drove him to betray and murder his former mentor.

Thomas Silverstein, a killer and gang leader, was so dangerous that he spent 36 years in solitary confinement.

Having committed over 27 assaults in prison, Billy Tracy is one of the most violent offenders on death row.