Nightwing. Volume 3. Death of the Family

"After having his face sliced off one year ago, the Joker makes his horrifying return to Gotham City! But even for man who's committed a lifetime of murder, he's more dangerous than ever before. The Joker sets his twisted sights on the members of the Bat-Family and attacks them all where it hurts--and for Dick Grayson, that means going after the family he's built up for the past year at Haly's Circus!"--