Black Bird, the latest addition to the true-crime genre headlined by Taron Egerton, takes on some heavy material. Created by Dennis Lehane, the show follows a convict – Jimmy Keene who finds himself in prison for selling drugs. When offered a deal by the FBI, he takes up the mission of getting a confession out of suspected serial killer Larry Hall. For Paul Walter Hauser who plays the creepy killer, the role seems unlikely. He is after all best known for comedy…