Batman Confidential — DC Comics
Issue: #21
"The Bat and the Cat" Part 5! The tale concludes as Batgirl finds out who sent Catwoman after Commissioner Gordon's notebook – and why! But to do so she will have to spend the night in Arkham Asylum!
Creators: Mike Carlin, Kevin Maguire, Fabian Nicieza, I.L.L., Tom Palmer Jr, Sal Cipriano
Characters: Batman, Joker, Scarecrow, Two-Face, Catwoman, Clayface (Karlo), Riddler, Cavalier, Barbara Gordon, Signalman, Catman, Blockbuster
Story arcs: The Cat and the Bat