<p>John Thomas Straffen ? Britain's longest-serving prisoner ? was the first patient to escape from Broadmoor Hospital and be prosecuted for a crime committed on the run. He killed within hours. Prior to this, at his home in Bath, he was dismissed as a loner, an imbecile, a 'child trapped in an adult's body'. On the afternoon of Sunday 15 July 1951, John Straffen strangled 8-year-old Brenda Goddard as she picked flowers. Three weeks later, he com...