Supernanny Jo Frost returns to see how the Woods family are doing with their three children, 13-year-old Caitlin, 11-year-old Billy and three-year-old Charlie. Previously, Charlie completely controlled the household with his tantrums. Supernanny turned their lives around, using her renowned naughty step to discipline Charlie, involving him in tasks like getting dressed to stop him resisting everything, establishing a strict daily routine, creating a calmer bedtime atmosphere and encouraging Mum and Dad to spend quality time with all their kids. But one year on, have Supernanny's improvements had a lasting effect?