In the title story of the 1937 book “Sanatorium Under the Sign of the Hourglass,” the Polish Jewish author Bruno Schulz writes of a place where time has come unstuck from the routines and rules of daily life. “Free of this vigilance, it immediately begins to do tricks, run wild, play irresponsible practical jokes, and indulge in crazy clowning,” he writes. In the story’s setting — a remote sanitarium — everyone is asleep or half-dreaming, and the narrator doesn’t know whether his convalescent father is dead or alive. This is the inspiration for the suitably untethered third feature from Stephen...