For more than a year and a half, Celia Blay, a 65-year-old from a small town in Wiltshire, delved into the world of online chat rooms with suicide themes, on the trail of someone she believed was hiding their identity in order to establish friendships with vulnerable young people, eventually encouraging them to end their own lives.
It is believed to be the first case of its kind in North America - and only one of a handful that have been brought across the globe.