Covered in tattoos, his terrifying appearance adds to Jaime Osuna being one of the most feared men in the US prison system. Awaiting trial, he began practising Satanism and attempted to kill a fellow inmate.

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 was sent to prison for the brutal murder of a female friend, but the violence didn't end there.

Mother of two Joanne Dennehy launched a knife attack on a man she had lured back to her flat before stabbing two men out walking their dogs. Now locked behind bars, Dennehy is one of only three women currently serving a whole life order in the UK.

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