Batman Vol.1 #606

It's been two and a half weeks since David Cain turned himself to the Gotham City Police Department and Bruce Wayne was cleared from the murder of Vesper Fairchild. Cain is due to stand trial for his crime and Bruce knows that Cain is in danger of being "silenced", thus he goes out the night of the trial and Oracle contacts him to tell him about the recent "inactivity" from a world-wide known assassin.