All Star: Batman and Robin the Boy Wonder (2005) #7

A study in revenge unravels deep in the Batcave and the young Dick Grayson is about to explode! Batman hands over the triggerman behind the Flying Graysons' murder, but when the killer fingers the criminal mastermind pulling the strings, the Dark Knight and his orphaned aerialist sidekick don't like what they hear. They don't' like it one bit.