| 0 | - | cover | 1 | pencils: Will Eisner; inks: Will Eisner | |
| 1 | - | activity | 1 | letters: typeset | |
| 2 | The Phony War of Cato and Jupiter | comic story | 13 | pencils: Courtney Thomasen; inks: Courtney Thomasen; letters: Courtney Thomasen | Morgo (villain, introduction, death); Zirgo (villain, introduction, death); The president of Earth (introduction); Nelson Cole |
| 3 | - | comic story | 4 | pencils: Bob Powell; inks: Bob Powell | Gale Allen; Jack North (guest-star); Prince Blaga Daru (villain, introduction) |
| 4 | The Vampire from Pluto | comic story | 5 | script: Al Bryant; pencils: Al Bryant; inks: Al Bryant; letters: Gene Fawcette | Fero (introduction); A werewolf from Pluto (villain, introduction, death); vampire from Pluto (villain, introduction, death); Dr. John Wade (introduction); Phyllis Wade (his daughter, introduction) |
| 5 | In the Jungles of Jupiter | comic story | 5.75 | pencils: Bob Powell, Richard Golden; inks: Richard Golden; letters: Richard Golden | Auro, Hardwich |
| 6 | Case 3: File 1: Clue 4 | comic story | 0.25 | pencils: Bob Powell; inks: Bob Powell | Bull's-Eye Bannon; Ezra Ark |
| 7 | Crime Takes a Holiday! | comic story | 5 | pencils: Don Rico; inks: Don Rico; letters: Bob Powell | The Red Comet; J. G. (villain, introduction, death); other warmongers (villains, introduction for all, all die) |
| 8 | Slave of the Lizard-Men | text story | 2 | script: ? [as Don Varick]; letters: typeset | Dexter Ames; Dr. Phillips; Gunner Hatch; lizard-men; unnamed giant humanoid |
| 9 | The Doomed Universe | comic story | 8 | pencils: Nick Cardy; inks: Nick Cardy; letters: Nick Cardy | Space Admiral Curry (introduction); the Universal President (introduction); Rocko (villain, introduction, death) |
| 10 | The Idiots of Pluto | comic story | 7 | pencils: Henry Kiefer; inks: Henry Kiefer; letters: Henry Kiefer | Morono [king of Pluto] (villain, introduction); King Satius (introduction); his daughter (introduction); Spurt Hammond; Plutonians |
| 11 | Slaves of the Flower People | comic story | 6 | pencils: Nick Cardy; inks: Nick Cardy; letters: Nick Cardy | The flower people of an asteroid (villains, introduction, death); Headless men of the asteroid (introduction); Buzz Crandall; Sandra Curan |
| 12 | Adventures on a New World | comic story | 7 | pencils: Art Peddy; inks: Art Peddy | The Grangonians (villains); Mimi Wilson (guest-star); Flint Baker |
| 13 | Planet Puns | cartoon | 1 | script: ? [as Jupitor] (sic) | Mr. Goldbucks |