The Dark Knight returns to battle a scheme by The Penguin and Rupert Thorne to sell illegal weapons! But there's a new superhero in Gotham City who has other plans for the evil entrepreneurs--Batwoman--in Batman: Mystery of the Batwoman. With high tech gadgets and an awesome talent for martial arts, Batwoman proves to be a formidable crimefighter--but Batman has no clue who she is. And when Batwoman crosses the criminal line, Batman must identify whether or not this new player is friend or foe!