Batgirl issue number 4 really upped the ante on this one.  A total change of direction will take place from now one when it comes to the narrative because of a key event that happens to Cassandra.  Also, Batman is rather disturbed by the video he saw of a young Cassandra Cain ripping a guy's throat out.  Batman refuses to believe his eyes...and the film.  He is now ready to journey across the globe to prove that Cass is no killer.