Batman reaches the end of the Riddler's gantlet.
The final installment of Dark Knight, Dark City brings The Batman to the end of The Riddler's Gantlet. The Riddler being warped by the Confessions of Jacob Stockman, a book from the past that documents the arrival of Barbathos (The Bat Demon) to Gotham. This issue would also reconcile The Batman with The Bat Demon.
This arc would be one of the many arcs to help inspire Grant Morrison's R.I.P. story arc.