World's Most Dangerous Prisoners

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.

Willing to kill for just $20, Joshua Dewayne Gardner commits his first murder at 24 in Hernando County, Florida. Even behind bars, he can't contain his rage, brutally beating a fellow inmate to death.

Imprisoned after a botched robbery that ends with the fatal shooting of an innocent man in Fayetteville, North Carolina. Craig Wissink later kills a corrections officer in a brutal attack.

Feared crime boss Ezequiel Romo ruthlessly runs the streets of L.A. - even from behind bars. Leading the Blythe Street gang from his cell, coldly ordering the murders of anyone who stands in his way.

Nearing the end of a lengthy prison sentence, Curtis Ray Watson does the unthinkable: he sexually assaults and murders a prison administrator in West Tennessee State Penitentiary, before escaping and going on a four-day run.

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 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.