Emil and the Detectives " review
National Theatre, London Bijan Sheibani's play is at its best when it returns to the human values of Erich Kastner's storyThe National has set the bar high when it comes to family entertainment, with shows ranging from His Dark Materials to the Katie Mitchell-Lucy Kirkwood revision of standard fairytales. And it's fair to say that this version of Erich Kastner's 1929 children's classic, adapted by Carl Miller and dir…