Data courtesy of the Grand Comics Database under Creative Commons license.

Issue Details

Issue #173
Published February 1968
Cover Price 0.12
Pages 36
Editing Mort Weisinger; E. Nelson Bridwell (Asst)

Cover Details - "The Jekyll-Hyde Heroes!"

Characters Robin; Superman (as Kralik); Batman (as Two-Face)
Genre superhero
Pencils Curt Swan
Inks George Klein

18 page Superman and Batman story "The Jekyll-Hyde Heroes"

Characters Superman; Batman; Lois Lane; Jimmy Olsen; Two-Face (really Batman), Kralik (really Superman); the Intercrime Gang; Dr. Arron; Fortress of Solitude; Batcave
Synopsis Dr. Arron's Psyche-Distortor chemicals cause complete character reversal in Superman and Batman, turning them into their own worst enemies.
Genre superhero
Script Jim Shooter
Pencils Curt Swan
Inks George Klein
Notes Despite the flashback to a previous battle, this is Kralik's first appearance.

12 page Editors' Round Table: Superman story "The Super-Key to Fort Superman"

Characters Superman; Lois Lane; Jimmy Olsen; Fortress of Solitude (intro) Batman; Joker (trophy); Green Kryptonite
Synopsis Someone has broken into Superman's Fortress of Solitude, so Superman searches the place for clues.
Genre superhero
Script Jerry Coleman
Pencils Wayne Boring
Inks Stan Kaye
Reprinted from Action Comics (DC, 1938 series) #241 (June 1958)