the murder took place based on the tape recording of Vesper's last moments, Nightwing is now convinced that the Bruce he knows could not have committed the murder, and decides their next move is to focus on gathering evidence that would not compromise Bruce's secret identity. At the same time, Batman launches his own, independent, investigation into his framing and steadily uncovers a conspiracy against Bruce Wayne after a run-in with David Said of Checkmate, subsequently having Said committed to Arkham under a false name in case he needs him later. A confrontation between himself and Catwoman prompts Batman to realize how important his Bruce Wayne identity is; he is moved to protect a wounded criminal during their meeting because that is what his father, Thomas Wayne, would have done. An earlier meeting with the detective who comforted him after his parents' deaths also serves to reinforce the importance of Bruce Wayne in Batman's life; as far as the detective is concerned, it was Bruce Wayne's life that was forever defined by the death of his parents...and the detective is also convinced that, whatever Bruce Wayne became that night, he did not become a killer. After returning to the Batcave and apologizing for his past actions, Batman reveals to the Batman Family that the murderer is David Cain, which he had deduced based solely on the evidence that Batgirl found earlier; the nerve strike that was used to immobilize Vesper is one that Bruce learned from Cain. Cain had been hired by then-President Lex Luthor to discredit Bruce Wayne for his stance against Luthor during the No Man's Land storyline. Cain subsequently deduces Batman's true identity, recalling his own acquaintance with a young Bruce when Bruce went to him for training. He was thus able to frame him for a crime where the only motive was Batman's desire to protect his identity. Capturing Cain, Bruce's name is subsequently cleared, Cain keeping Bruce's identity as Batman secret to protect his daughter. This story runs through Azrael: Agent of the Bat #91; Batgirl #27 and #29; Batman #600-601, #603, and #605; Batman: Gotham Knights #27-28 and #30-31; Birds of Prey #41-43; Detective Comics #768-772; and Nightwing #68-69. Reading order Bruce Wayne: Murderer?: Prelude: Batman: The 10-Cent Adventure Part 1: Detective Comics #766 Part 2: Batgirl (vol. 2) #24 Part 3: Nightwing (vol. 2) #65 Part 4: Batman: Gotham Knights #25 Part 5: