"Secrets and betrayal -- everyone has something to hide, but will revealing these mysteries bring the team closer together -- or drive them apart? The team faces off against the Dark Knight's top security when they break into the Batcave. But what could be so important for Damian to risk betraying Batman's trust? One betrayal leads to another, and Damian vows to hunt down Jason Todd. During the intense battle of the Robins, dangerous information falls into the wrong hands. Secrets are revealed as Djinn and Roundhouse open up about their mysterious pasts."-- Provided by publisher.