Yesterday we learnt a little about what to expect from A Matter of Family, the Batgirl DLC coming to Batman: Arkham Knight next week (or the week after for those who don't own a season pass). This story content is going to take Barbra Gordon back before the start of the franchise to take on the Joker.
Today, you can see that in action with this new trailer. Interestingly it also shows the debut of Harley Quinn in her Harlequin costume from the animated series. That is sure to please fans.
Take a look: