Story: "Night People Part Three: The Burning Pit" (22 Pages)

Credits:

John Wagner and Alan Grant (plot, script)
Norm Breyfogle (pencils, inks)
Todd Klein (letters)
Adrienne Roy (colors)
Dennis O'Neil (edits)

Feature Character:

Batman (next in Batman #421)

Villains:

Corrosive Man
Webley
Mortimer Kadaver (next in issue #610)
Phil Hobart
Harlan Woolf (dies)

Other Characters:

D.J. Dark
Legs
Babette

DC Bonus Book No. 5: "For the Love of Ivy" (14 Pages)

Credits:

Lewis Klahr and Steve Piersall (plot, script)
Dean Haspiel (cover pencils, cover inks, pencils)
Denis Rodier (inks)
Dan McKinnon (letters, colors)
Dennis O'Neil (edits)

Feature Character:

Batman (in between Batman #422 and #423)

Villains:

Poison Ivy (also in flashback in between Batman #400 and mains story; next in Suicide Squad Vol. 1 #33)
Simon Buckley (first appearance; a killer for hire)

Other Characters:

Dore Warren (first appearance; also in flashback preceeding main story; dies)
Dr. O'Dell (first appearance; Ivy's doctor)