Issue Detective 639
Subtitle The Idiot part two: The Queen of Hearts
Date December 1991
Writer(s) Peter Milligan
Artist(s) Jim Aparo, Mike DeCarlo
storyline (continued from Batman 472) 
Batman only ingested a bit of the drug when some of the stock went airborne. He worked through the effects and gave chase to the manufacturers / dealers. He caught one and forced him to take him to the source of the drug. They were attacked by children under control of the drug.
 
(continued in Batman 473)