Take an in-depth look at the terrifying offenders whose atrocious crimes earned a whole life sentence, but despite being securely locked behind bars, these inmates go on to torture, kidnap and even kill.

After shooting two people, Rodney Berget kidnaps and sexually assaults a gas station clerk. South Dakota prison struggles to contain him. His final attempt involves the sadistic murder of a corrections officer.

Convicted of 22 felonies, Miti Maugaotega Jr. receives one of the longest prison sentences in Hawaii history. Behind bars, he joins a prison gang and becomes a tornado of death and destruction.

After being linked to more than 100 robberies, Mikel Brady shoots an interstate trooper and later leads a violent prison escape attempt with three accomplices, killing four staff members before being recaptured.

After murdering his aunt and uncle, Ramon Escobar rampages across Los Angeles, bludgeoning five strangers with a baseball bat and bolt cutters. Even prison cannot stop him - he strangles his cellmate.

Rocky Beamon lures a woman into the woods outside Naples, Florida, and drowns her there. Once in prison, he brutally kills two fellow inmates - and vows to kill again.