World's Most Evil Prisoners

Sent to prison after the torture and violent murder of a mother of six, Jamie Osuna is now awaiting trial.

While on trial for rape, 33-year-old Brian Nichols goes on a violent rampage that results in three murders.

The story of Tyler Davis Bingham, pretty criminal turned leader of the brutal and feared Aryan Brotherhood.

At 18, Christa Pike commits a brutal murder and becomes one of the youngest ever women sent to death row.

Edward Johnson is sent to prison for the brutal murder of a female friend, but the violence doesn't end there.

One of the UK's most infamous serial killers, Joanna Dennehy brutally stabbed three men to death.

Being behind bars only made Italian-American mobster Freddy Geas even more brutal.

Gary Vinter, in prison for double murder, stabs a fellow inmate in the eye and gives another brain damage.

James 'Porky' O'Rourke's addiction to violence means he is one of the most feared men in the UK prison system.