Nightwing v02 - Night of the Owls (2013)

Dick Grayson must face his past and a deadly adversary in the present as he learns of his connection to the mysterious Court of Owls. But even if he's able to stop an undead, unstoppable assassin, he'll still have to deal with the rising forces of the anti-Gotham City army and its leader the mysterious Paragon. Collects Nightwing (2011-2014) #0, 8-12