Batgirl, Vol. 4 #50 (2016)

Open Mind
It's the explosive conclusion of the epic that changed Barbara Gordon forever! The enemy lurking at the edges of Batgirl's life has been revealed, as have the gang of heroes assembled to help her! From this point on, Batgirl doesn't walk alone! It's an extra-sized celebration of the greatest hero Burnside has ever known, from Cameron Stewart, Brenden Fletcher and Babs Tarr!
Release Date: 2016