| 0 | - | cover | 1 | pencils: Lou Fine; inks: Lou Fine | Hercules [Joe Hercules] |
| 1 | The Seaside Saboteurs | comic story | 9 | pencils: Reed Crandall; inks: Reed Crandall | Hercules [Joe Hercules]; a gang of saboteurs (villains, introduction for all) |
| 2 | Murder in the Machine Factory | comic story | 6 | script: Bob Powell; pencils: Al Bryant; inks: Al Bryant | Ed Grover (introduction); Kale (villain, introduction); Kurt (villain, introduction); their accomplices (villains, introductions) |
| 3 | The Squirt | comic story | 1 | script: Jack Cole; pencils: Jack Cole; inks: Jack Cole | |
| 4 | The Case of London Joe | comic story | 5 | script: S. M. Iger; pencils: Alex Blum; inks: Alex Blum | London Joe (villain, introduction) |
| 5 | Visitor's Day | comic story | 5 | script: Klaus Nordling; pencils: Klaus Nordling; inks: Klaus Nordling | |
| 6 | The Missionary's Niece | comic story | 5 | pencils: Henry Kiefer; inks: Henry Kiefer | Molly Snood (introduction); Mary Blake (introduction) |
| 7 | Armored Cars of Crime | comic story | 6 | script: Toni Blum; pencils: Witmer Williams; inks: Witmer Williams | Boldoni (villain, introduction); his gang (villains, introductions) |
| 8 | A War of Roses | comic story | 4 | pencils: George Appel; inks: George Appel | |
| 9 | - | comic story | 1 | script: Arthur Beeman; pencils: Arthur Beeman; inks: Arthur Beeman | |
| 10 | Damus the Wizard | comic story | 5 | script: S. M. Iger; pencils: Alex Blum; inks: Alex Blum | Neon [Tom Corbet]; Damus (villain, introduction); Otto Shickler (villain, introduction) |
| 11 | Gangster's Ghost | text story | 2 | script: Toni Blum (Tony Boone); letters: Typeset | |
| 12 | The Graveyard Spies | comic story | 4 | pencils: George Appel; inks: George Appel | Ronald Morgan (villain, introduction); other spies (villains, introductions) |
| 13 | The Oxygen Thieves | comic story | 4 | pencils: Maurice Gutwirth; inks: Maurice Gutwirth | A race of aliens (villains, introductions) |
| 14 | The Morale Murderers | comic story | 7 | pencils: Nick Cardy; inks: Nick Cardy | Gabby (journalist, introduction); Sam (journalist, introduction); A gang of spies (villains, introductions) |