Forensic scientists have started to exhume the contents of a coffin in a bid to solve the 250-year-old mystery about the final resting place of a Highlands clan chief. <br /><br />Forensic scientist Dame Sue Black is to study what are said to be the remains of Simon Fraser, nicknamed the Old Fox, the 11th Lord Lovat. <br /><br />According to the official account after being beheaded in 1747, Lord Lovat's body was buried under the floor of a chapel at the Tower of London.