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| Publisher |
DC |
| Artist |
Carmine Infantino |
| Writer |
Gardner Fox |
| Published | May 1962 |
In this sequel to Justice League of America #3, space villain Kanjar Ro sets out to conquer the planet Rann. Thanks to his Gamma Metal Gong he seems to have succeeded - but not before Adam Strange has managed to alert the JLA. Can even the Earth's greatest heroes overcome the threat of Kanjar Ro and free the people of Rann?