Batman: Bad Blood (2016) online

Weeks pass but both Batman and Bruce Wayne's disappearances have not gone unnoticed. Alfred Pennyworth takes up the guise of Wayne in electronic communications using gadgets in the Batcave to maintain appearances, while sending out a distress signal to Dick Grayson. Meanwhile, Damian Wayne watches a news report of Batman's disappearance and sets out to return to Gotham. Katherine Kane meets with her father Colonel Jacob Kane revealing she feels responsible for Batman's apparent death and asks his help to track down Heretic. It is revealed that she was traumatized when she, her sister Elizabeth and her mother Gabrielle were abducted and held for ransom, although she was the only one not killed by her captors before her father rescued her. After her time in the military, she became a drunkard who was saved by Batman from street thugs, which motivated her to never need to be saved again, resulting in her becoming Batwoman.