Little Batman: Month One (Little Batman: Month One #3)

IT'S LITTLE BATMAN VS. THE JOKER! What happens when a kid, who is also a secret superhero, sneaks off to save his dad, who is also a secret superhero? Mayhem, of course! Alfred and the babysitter split up to search high and low for Little Batman... but little do they know, he's off hunting for clues from the last person they'd expect: The Joker.