Reprints BATGIRL #15 16 21 and 26-28. Batgirl faces the deadliest of Gotham's villains: The Joker! The Clown Prince of Crime. Cassandra and guest star Spoiler must defeat Shadow Thief. Then can Batgirl stop the father of a young boy from making a lethal mistake? And just who are the mysterious agents that are after our heroine?