“Theater feels spiritual to me,” actor Jon Michael Hill told The Rundown. You may know him from TV shows including “Detroit 1-8-7” and “Elementary,” but Hill is also a Steppenwolf Theatre Company ensemble member. He plays the introverted main character and narrator of “Purpose,” a world premiere from playwright Branden Jacobs Jenkins and director Phylicia Rashad—yes, that Phylicia Rashad. In this episode, host Erin Allen talks to Hill about “Purpose,” developing new characters and bringing the audience into a play.