Going Sane, Part 4 of 4. Batman returns to action in full force, and it triggers the destruction of the Joker's brief return to sanity. The great game against the Dark Knight resumes with manic ferocity as the Joker tries to make certain that this time Batman stays dead. Written by J.M. DeMatteis, with art and cover by Joe Staton and Steve Mitchell. Deluxe format.