Batman The Dark Knight Detective Volume 5 TPB

"In these 1990s stories, the Dark Knight Detective travels to Japan to honor a long-standing debt...one that will leave him facing off against the very master who trained him! The Dark Knight will also have to deal with haunting memories from his past as he encounters the Street Demonz again, but now he's older—now he's ready to protect others. And then there's The Joker... Collects Detective Comics #612-614 and #616-621, plus Detective Comics Annual #3."