| Issue | #291 |
| Published | September 1982 |
| Frequency | monthly |
| Cover Price | 0.60 USD; 0.20 GBP |
| Pages | 36 |
| Editing | Laurie Sutton |
| Notes | Letters page replies by Paul Levitz. |
| Characters | Legion of Super-Heroes [Wildfire; Dawnstar; Timber Wolf; Element Lad; Brainiac 5]; Mordru |
| Genre | superhero; science fiction |
| Pencils | Keith Giffen (signed) |
| Inks | Romeo Tanghal (signed) |
| Reprinted | in Legion of Super-Heroes: The Great Darkness Saga (DC, 1989 series) #[nn] |
| Characters | Legion of Super-Heroes [Mon-El; Dream Girl; Shadow Lass; Element Lad; Chameleon Boy; Ultra Boy; Phantom Girl; Timber Wolf; Sun Boy; Star Boy; Light Lass; Cosmic Boy; Dawnstar; Brainiac 5; Invisible Kid [Jacques Foccart]; Wildfire; Blok; Superboy; Saturn Girl; Lightning Lad (cameo)]; Darkseid; Servants of Darkness [Superman (Clone); Orion (clone); Kalibak (Clone); Guardian of the Universe (Clone); Lydea Mallor (Clone)]; Mordru; Time Trapper; White Witch |
| Genre | superhero; science fiction |
| Script | Paul Levitz |
| Pencils | Keith Giffen (breakdowns); Larry Mahlstedt (finished art) |
| Inks | Larry Mahlstedt |
| Colors | Carl Gafford |
| Letters | Annette Kawecki |
| Notes | The Great Darkness Saga, Part 2 |
| Reprinted | in Legion of Super-Heroes: The Great Darkness Saga (DC, 1989 series) #[nn] |
| Characters | Legion of Super-Heroes [Saturn Girl; Lightning Lad; Cosmic Boy]; Servant of Darkness [Lydea Mallor (Clone)] |
| Genre | superhero; science fiction |
| Script | Paul Levitz |
| Pencils | Howard Bender (breakdowns); Rodin Rodriguez (finished art) |
| Inks | Rodin Rodriguez |
| Colors | Carl Gafford |
| Letters | Janice Chiang |
| Notes | This story is redone in Legion of Super-Heroes: The Great Darkness Saga (DC, 1989 series) #[nn] with new art. |