'The Leftovers': A biblical event leaves a sorrowful mystery

Whether or not anyone wants to spend the summer staring directly at sorrow and regret, that's precisely what HBO and the creators of the new drama "The Leftovers" seem to have in mind. There's nothing warm or welcoming about it, nor is there meant to be. Where the network's "True Detective" occasionally broke its dolefulness with the slyest, philosophically artful wink at an audience riveted by its mystery, "The Leftovers" grafts more unhappiness onto unhappiness. Where "Game of Thrones" revels ...