Story: "The Idiot, Part One: The Queen of Hearts" (22 Pages)

Credits:

Peter Milligan (plot, script)
Norm Breyfogle (pencils, inks)
Adrienne Roy (colors)
Todd Klein (letters)
Kelley Puckett (assistant edits)
Dennis O'Neil (edits)

Feature Character:

Batman (last in Suicide Squad Vol. 1 #62; next in Detective Comics #639; also in flashback to three years previous)

Supporting Characters:

Robin III
Alfred Pennyworth (both next in Robin II #1)

Villains:

Queen of Hearts (first appearance; also in flashback)
Doctor Crosby (first appearance; last in flashback in Detective Comics #639; also in flashback preceding flashback in Detective Comics #639; next in Detective Comics #639)
The Idiot (first appearance; in between flashback and main story in Detective Comics #639)
Zeno (first appearance; a drug dealer; next in Detective Comics #639)

Other Characters:

Detective De Freiras (first appearance; a police officer of Rio De Janeiro; next in Detective Comics #640)
The Dead Boys (first appearance; children under the influence of the Idiot Root; next in Detective Comics #639)

Comment: Story continues in Detective Comics #639.