UK's most dangerous serial killer 'will die in underground glass box' he entered 44 years ago
One of the UK's most threatening serial killers has spent a total of 16,400 days living in solitary confinement inside a glass cell since 1979. Robert Maudsley, who is Britain's longest-serving prisoner, has spent the last 49 years of his life in prison and is set to die in an underground glass box after killing four men in the 1970s.