The original play that inspired Judy, penned for a 2005 debut by Peter Quilter, was rather more appropriately titled ‘End of the Rainbow’. This is not to relate film and play alike to some pot of gold but instead to note the sobriety with which each characterises the later life of a star who was driven to anything but. Judy may, semantically, lay the ground for heraldic tribute to Garland as icon but it is a film that works best when it explores the desperation of a mother at sea. The tone is somber, give or take a handful of glitzy highlights, and the aftertaste embittered by a distressingly emotional crux. At the film’s core, Renée Zellweger gives the most electrically all-in performance of her career.