- Script:
- Jerry Siegel
- Pencils:
- Curt Swan
- Inks:
- Sheldon Moldoff
- Colors:
- ?
- Letters:
- Milton Snapinn
- Editing:
- Mort Weisinger
- Genre:
- superhero
- Characters:
- Legion of Super-Heroes [Mon-El; Chameleon Boy; Superboy; Light Lass; Brainiac 5; Saturn Girl; Saturn Girl; Cosmic Boy; Lightning Lad; Ultra Boy; Triplicate Girl (death); Duo Damsel (1st); Shrinking Violet; Matter-Eater Lad; Invisible Kid; Colossal Boy; Sun Boy; Phantom Girl; Star Boy; Bouncing Boy]; Proty II; Computo; Beast Boy; Leeta 87; Nimbok; Hate Face; Mog Yagor; Bizarro Computo
- Synopsis:
- The Legionnaires go underground to regroup before taking on Computo after he kills one of Triplicate Girl's bodies. Then the Legion eliminates the threat of Computo with anti-matter.
- Reprints:
A monument to Beast Boy, from the Heroes of Lallor, is shown on Shanghalla, where the remains of one of Triplicate Girl's body are sent. Triplicate Girl takes on the identity of Duo Damsel in this story. Story continues from previous issue. Writer confirmed by Martin O'Hearn.