Detective Comics #841

Detective Comics #841, published by DC in April 2008, presents 'The Wonderland Gang!' by Paul Dini and Dustin Nguyen. Batman investigates a new group of Lewis Carroll-themed villains, including the Mad Hatter, Tweedledum, and Tweedledee. Batman uncovers the Mad Hatter is a victim of mind control, leading to a confrontation with the true masterminds. This issue is notable for the first team appearance of the Wonderland Gang and the first appearance of Tweedledum.