November 1967, Mone entered St. John's Roman
Catholic High School, where he had been expelled from 3
years earlier. He held hostage a group of 15 year old
girls and their teacher, Nanette Hanson, who was
pregnant, for 90 minutes.
He made the
pupils barricade doors and amused himself by tormenting
and sexually abusing the girls. In front of them all he
raped one girl and sexually assaulted another while
holding a gun to her head.
pleaded with him, eventually convincing him to let the
girls go. As they fled they heard a shot, he had made
Nanette turn round and had shot her at close range in
declared insane and sent to the State Hospital for
Scotland and Northern Ireland in Carstairs, Scotland.
December 1976, Mone and fellow inmate and lover
Thomas McCulloch, escaped from the hospital, killing
another inmate and a male nurse. They escaped using a
rope ladder to scale the perimeter fence. As they
fled. Before being recaptured they also killed a police
officer, and seriously injured another.
finally caught by the police near Carlisle, and taken to