WARNING: DISTRESSING CONTENT The young woman was beaten, waterboarded and burnt by the sadistic couple, who thought the girl was part of a plot to drug and "molest" the family A 21-year-old French nanny who was beaten, tortured and killed by her employers over a deluded belief she was in cahoots with Boyzone founder Mark Walton left behind a chilling final note. Sophie Lionnet was a live-in nanny for Sabrina Kouider, 35, and partner Ouissem Medouni, 40, in Wimbledon, south-west London, where she was starved and “interrogated” over 12 nightmarish days. She had left her home in France for the...