Robert Maudsley

Robert John Maudsley (born 26 June 1953) is an English serial killer. Maudsley first killed a man who showed him pictures of children he had sexually abused. After surrendering himself to police and saying he needed psychiatric care, Maudsley was sent to Broadmoor Hospital, where he killed a convicted child molester. He later killed two men on the same day: one imprisoned for murdering and sexually assaulting his wife and another imprisoned for attempting to strangle a four-year-old girl. Maudsley's killings have been described as vigilantism.

Initial reports falsely stated he ate part of the brain of one of the men he killed in prison, which earned him the nickname "Hannibal the Cannibal" from parts of the British press and "The Brain Eater" among other prisoners. National newspapers were advised that the allegations were untrue, according to the post-mortem report. Maudsley is the longest-serving British prisoner in solitary confinement.