E74: Madhouse

Madhouse is the twelth episode of Batman: Shadow War and part of the Arkham Asylum arc.

Plot
Batman continues through the asylum and contacts Alfred Pennyworth, who helps by calling in Batgirl to help with the situation as well as informing James Gordon. Meanwhile, Joker is seen giving Harley electroshock therapy while making Quincy Sharp watch, then tortures Sharp for fun also. Batgirl arrives and takes out the snipers Batman is dealing with, then reunite and break into Arkham Mansion together to hunt down Joker. But they instead find Scarecrow, who uses Fear Toxin on the two and kidnaps them.

Batman is then seen being dragged in a straightjacket and locked up in a cell, then Quinn is seen locking up Batman and taunting him. Batman asks where Batgirl threateningly, so she responds that she's waiting in the trial room with the others, leaving Batman confused. Eventually, armed inmates approach Batman and escort him to the trial room, which is actually the Visitor Center redesigned.

Surviving security guards, Batgirl, Aaron Cash, doctors and other workers are seen in the trial room held hostage and Scarecrow, Poison Ivy, Calendar Man, Harley Quinn, Victor Zsasz, Riddler, Mad Hatter, Firefly, Clayface and Ventriloquist and Scarface act as the jury while Killer Croc is the prosecutor and Joker is the judge. It is also revealed Harvey Dent has also been captured and Joker claims he'll be Batman's defendant during the trial. At the end of the trial, Joker decides to sentence Batman to the asylum to be tormented and Harvey will be executed. However, some of the criminals want him killed and Calendar Man stands up to say Batman should die instead: so Joker makes an example of him for questioning his authority by stabbing him to death. Batman is then seen escorted out of the room to a cell and Joker has men prepare their weapons to kill Harvey.