DC's mature-rated prestige format Black Label will release the followup to writer Jeff Lemire and artist Andrea Sorrentino's Joker: Killer Smile on June 23, 2020. Batman: The Smile Killer is a one-shot epilogue that focuses on a young "Bruce Wayne, who grew up watching The Mr. Smiles Show - and the show might have been watching him back! And not only was young Bruce watching, he was listening... listening as Mr. Smiles spoke across the airwaves only to him." Take a sneak peek at the book right here.