A bravura turn from Andy Karl propels a tricky piece over its self-created speed bumps Groundhog Day, appropriately, is back where it started. The hit film about a TV weatherman's endlessly reiterated day in small-town USA moved to the Old Vic stage in 2016; but then its progress became bumpy, despite the awards showered on it and its lead, Andy Karl, on both sides of the Atlantic. Karl was injured during a Broadway …
