| Characters |
Justice League of America [Superman [Clark Kent; Kal-El]; Flash [Barry Allen]; Green Lantern [Hal Jordan]; Green Arrow [Oliver Queen] (all Earth-1)]; Justice Society of America [Hourman [Rex Tyler]; Wonder Woman [Diana Prince Trevor]; Johnny Thunder; Mr. Terrific [Terry Sloane]; Wildcat [Ted Grant]; Hawkman [Carter Hall]; Robin [Dick Grayson](joins- first appearance as adult); Thunderbolt (all Earth-2)]; Black-Sphered Villains [How Chu; Gem Girl [Claire Morton]; Money Master [Horace Rowland]; Smashing Sportsman [Marty Baxter] (all first appearances)] (villains) |
| Synopsis |
The JSA, with new member an adult Robin, confront and are defeated by four normal persons on Earth-2, powered by black matter from another universe. When they ask for help from the JLA using Johnny's T-Bolt, he brings them a battered JLA team, suffering the same problem as their counterparts. Both groups them learn the black matter's origins, and resolve to end the problem on Earth-2 first, lest both worlds be destroyed. |
| Genre |
Superhero |
| Script |
Gardner Fox |
| Pencils |
Mike Sekowsky |
| Inks |
Sid Greene |
| Letters |
Gaspar Saladino |
| Notes |
Story continues in #56. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007). |
| Reprinted |
in Justice League of America Archives, The (DC, 1992 series) #7 (February 2001); in Crisis on Multiple Earths (DC, 2002 series) #2 |