Complex sentence: After dropping out of the University of Otago medical school when caught cheating at an exam, Roberts spent his life impersonating medics, military men, writers and academics; when each charade fell through, he would move to a new town and new circle of targets.
Split into simpler sentences: After dropping out of the University of Otago medical school when caught cheating at an exam Roberts spent his life impersonating medics, military men, writers and academics. When each charade fell through, he would move to a new town and new circle of targets.