A new TV documentary has revealed the shocking story which led to Liverpool serial killer Robert Maudsley being known as "Hannibal the Cannibal".
Maudsley has been housed in a "glass cage" at HMP Wakefield after killing four men in the 1970s. The murderer, from Toxteth, is believed to be so dangerous that he is no longer allowed to associate with other prisoners or even guards.
Maudsley first killed in 1974 having fled home at 16. He became trapped in a spiral of drug abuse, funding his habit through sex work. One of his clients, John Farrell, was his first victim.
