Script:	Denny O'Neil
Pencils:	Dick Dillin
Inks:	Joe Giella
Colors:	?
Letters:	John Costanza

• Genre:superhero
• Job Number:S-449

Justice League of America [Green Lantern [Hal Jordan]; Superman [Clark Kent; Kal-El]; Batman [Bruce Wayne]; Hawkman [Katar Hol]; The Flash [Barry Allen]; The Atom [Ray Palmer]; Green Arrow [Oliver Queen]; Black Canary [Dinah Lance]; Wonder Woman [Diana Prince] (flashback)]; Crime Syndicate [Owlman (flashback); Superwoman (flashback)]; Justice Society of America [Hourman [Rex Tyler]; Green Lantern [Alan Scott]; Starman [Ted Knight]; Dr. Fate [Kent Nelson; Nabu]; Wonder Woman [Diana Prince Trevor] (cameo); The Atom [Al Pratt] (cameo); Robin [Dick Grayson] (cameo); Sandman [Wesley Dodds] (cameo); Dr. Mid-Nite [Charles McNider]; Hawkman [Carter Hall]; The Spectre [Jim Corrigan]; The Flash [Jay Garrick]; Wildcat [Ted Grant]; Superman [Clark Kent; Kal-L]; Batman [Bruce Wayne] (cameo); Johnny Thunder (cameo); Mr. Terrific (cameo); Red Tornado [John Smith]]; Jimmy Olsen (cameo); Creator2 (villain)

Synopsis:

A new menace threatens both Earths 1 and 2 as Red Tornado is captured by a foe known only as Creator2. Using his unique vibrational energies, Creator2 targets both the JSA and JLA separately, as each world's doppelganger falls prey to Creator2's traps. To be continued...

Reprints (9)

• in Batman (Editorial Novaro, 1954 series) #607 (9 de diciembre de 1971)
• in Mighty Comic (K. G. Murray, 1960 series) #88 (Circa April 1972)
• in Crisis on Multiple Earths (DC, 2002 series) #2 ([December] 2003)
• in Showcase Presents: Justice League of America (DC, 2005 series) #4 ([May] 2009)
• in Justice League of America Archives (DC, 1992 series) #10 ([April] 2012)
• in Justice Society of America: A Celebration of 75 Years (DC, 2015 series) ([September] 2015)
• in Justice League of America: The Bronze Age Omnibus (DC, 2017 series) #1 ([May] 2017)
• in Justice League of America: The Last Survivors of Earth (DC, 2019 series) ([October] 2019)
• in Crisis on Multiple Earths (DC, 2021 series) #1 - Crossing Over (2020 [April 2021])

Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.

First appearance of the Batman of Earth-2 as a cameo appearance. Although the Earth-2 Batman is introduced, for some reason Dr. Mid-Nite was targeted instead by the writer for this story as being the Earth-1 Batman's closest equivalent.

Script:	Julius Schwartz
Pencils:	Mike Sekowsky (logo illustration)
Inks:	Bernard Sachs (logo illustration)
Colors:	? (logo illustration)
Letters:	typeset

• Job Number:S-479

letters submitted by Don McGregor; Scott Gibson; Steve Grabinsky; Martin Pasko; Jeff Ristine; R. L. Thomas; Peter J. Towne