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.
EPISODE 1
Vinter
Gary Vinter, in prison for double murder, stabs a fellow inmate in the eye and gives another brain damage.
EPISODE 2
O 'Rourke
James "Porky" O'Rourke's addiction to violence means he is one of the most feared men in the UK prison system.
EPISODE 3
Dennehy
One of the UK's most infamous serial killers, Joanna Dennehy brutally stabbed three men to death.
EPISODE 5
Osuna
Covered in tattoos, his terrifying appearance makes Jaime Osuna a feared man in the U.S. prison system; awaiting trial, he begins practicing Satanism and attempts to kill a fellow inmate.
EPISODE 6
Johnson
Edward Johnson was sent to prison for the brutal murder of a female friend, but the violence didn't end there.
EPISODE 7
Robertson
James Robertson is one of the most feared men in the US prison system; he murdered his cellmate, attacked a prison employee and doesn't hold back from getting what he wants.
Emma Griffiths
Koulla Anastasi
Matthew Gordon
