Mary Stuart, Queen of Scots, was a lying adulteress who plotted with her lover to murder her husband, an intriguing new study claims. The analysis by Lesley Smith, a medical historian, claims that Mary lied about being raped to explain her pregnancy and justify her third marriage after her second husband, Lord Darnley, was strangled in Edinburgh... Her beauty and sexual attractiveness -- at 5ft 11in, Mary was about a foot taller than the average woman -- gave her cousin Elizabeth I all the more reason to eventually execute her for treason in 1587, Ms Smith said. "All in all,...