The Linda Gross Theater and the Atlantic Theater Company, New York The Tony-winning writer of Harry Potter and the Cursed Child stumbles with a navel-gazing show about an unconvincing group of twentysomethings Here is the paradox at the shrunken heart of Jack Thorne's Sunday: how did the same playwright who won a Tony for writing about time-traveling boy wizards manage to make a discussion of Anne Tyler so wildly imp…
