Batman: Gotham Nights (Batman: Gotham Nights Vol. 2 #3)

Batman is hot on the trail of a series of murders in Brazil, where government officials and various captains of industry have been mysteriously murdered by their own bodyguards. None of the assailants knew each other, but the Bodyguard Murders story went viral. As the Dark Knight starts assembling the pieces of the puzzle, he notices the things all these victims have in common are a connection to the logging industry, a penchant for bribes... and a woman who goes by the name POISON IVY.