- Script:
- Cary Bates
- Pencils:
- Curt Swan
- Inks:
- Jack Abel
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Lex Luthor (villain); Superman; Clark Kent; Perry White; Jimmy Olsen; Supergirl; green kryptonite; Brainiac 5
- Reprints:
Story is in two parts:
"The Most Dangerous Door in the World" 8 pages
"Success Is a Heartbeat Away" 7 pages
- Script:
- Jerry Siegel
- Pencils:
- Al Plastino
- Inks:
- Al Plastino
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superman [Clark Kent]; Supergirl [Kara Zor-El]; Krypto; Kandor; Fortress of Solitude; green earthite; red kryptonite; Interstellar Council of United Planets
- Synopsis:
- In his Fortress of Solitude, Superman disassembles a strange machine he found in space. When the machine explodes and destroys the Earth, Superman, Supergirl and Krypto are the only survivors.
- Reprints:
No villain. Story is a red kryptonite hallucination.