Book excerpt: 'A chilling story' -- Independent Charles and Laura live a sheltered, gilded life in the the privileged world of Cambridge academia: young and in love, their marriage is blessed by a wonderful child - Naomi. On Christmas Eve morning, Charles sets off with Naomi on a shopping trip to London. By the end of the day, all Charles and his wife have left are cups of tea and police sympathy... Their beautiful, angelic only child, has disappeared. Days later her murdered body is discovered... but is she dead?