Detective Comics#750(2000)

Following the incident that drove a wedge between him and the rest of the JLA, Batman steps up his campaign to track down Ra's al Ghul, though he claims when asked that his main objective is to capture Whisper A'Daire. Whisper and Abbott, meanwhile, attempt to re-enter al Ghul's good graces by telling him the location of his wayward daughter Talia - Switzerland. They are sent to retrieve her, arriving just after Batman, who believed that Ra's al Ghul would be here, having tracked withdrawals from one of his accounts and followed the young man, Josef Witschi, who made the withdrawals. In the ensuing confrontation, Abbott captures Talia only because Talia allowed him to capture her to save Batman, and Whisper is taken by Batman. He gives her an antidote to al Ghul's elixir, but she is loyal beyond mere addiction and although she reveals where Ra's can be found, she immediately warns him that Batman is in pursuit. Aided by a clue left by Talia, Batman moves from Bern to Paris to the Libyan desert, eventually catching up with al Ghul. Although captured, he is liberated by Talia, who knows that her father will never forgive her for this latest act of betrayal. Batman destroys all remaining supplies of the form of the elixir which Ra's planned to unleash on Gotham, then he and Talia go their separate ways.