Like the old Russian proverb says, if you wanna catch a killer, kidnap a different killer and force them to walk you through their process until you eventually find the person who murdered you in cold blood on your newly renovated Gotham ferry...point is, I'm makin' Victor Zsasz help with my murder mystery and this Sherlock and reluctant Watson are about to blow the doors wide open on some universe-alterin' shenanigans. Plus, Bud and Lou get belly rubs, I lose my deposit on a fog machine I rented, and my killer is revealed!

Key: Harley Who Laughs identity revealed