Rats' Tales " review
Royal Exchange, ManchesterIt is supposedly the case that you are never more than 10 feet away from a rat. In Carol Ann Duffy's compendium of verminous fables, you are certainly never far from a fiendish plot twist, a thrilling metaphor or a dazzling feat of theatrical invention.Duffy and adaptor-director Melly Still established the Grimm Tales franchise almost 20 years ago, though their latest collaboration is not so…