(W/A/CA) Sam Kieth. With Joker back in Arkham* Maxx runs off into the night. Meanwhile* Batman grows more wary of Dr. Disparu's experiments. In an effort to unravel the riddles of the Outback (and Disparu)* Batman seeks out Julie Winters... and they both enter a dimensional hole leading to the Outback-where they encounter an alternate version of Harley Quinn! Back in the real world* Joker* Harley* and the Penguin are the current subjects of Disparu's experiments-experiments that have a decidedly bad reaction on the Maxx!