| 0 | A Great Action Story | cover | 1 | pencils: Gill Fox; inks: Gill Fox | Bozo the Robot; The Ray [Happy Terrill] (inset); Espionage [Black X] (inset); Midnight [Dave Clark] (inset); Wings Wendall (inset) |
| 1 | Cyanide and Sabotage | comic story | 9 | pencils: Reed Crandall; inks: Reed Crandall | The Ray [Happy Terrill]; Bud; Alan Hale (death) |
| 2 | The Oil Well Murder | comic story | 6 | script: Jack Cole; pencils: Jack Cole; inks: Jack Cole; letters: Jack Cole | Midnight [Dave Clark]; Alice Taylor; Doc Mortimer Wackey; Gabby (a talking monkey); Hobbs, Chad, Butch; J. A. Carlson; Sgt. O'Toole |
| 3 | Smoking Will Stunt Your Growth | comic story | 1 | script: John Devlin; pencils: John Devlin; inks: John Devlin | Archie "King" O'Toole |
| 4 | - | comic story | 5 | script: Paul Gustavson; pencils: Paul Gustavson; inks: Paul Gustavson; letters: Paul Gustavson | The Jester [Chuck Lane]; Terry Mills; Mr. Mills; Inspector Mulligan; Scrapper (Lane's dog, introduction) |
| 5 | - | comic story | 5 | script: Art Pinajian; pencils: Art Pinajian; inks: Art Pinajian | The Invisible Hood [Kent Thurston]; Zergon [aka Lieutenant Jergens] (villain); Professor Saxon, Miss Saxon |
| 6 | - | comic story | 5 | pencils: Alex Blum; inks: Alex Blum | The Purple Trio [Warren; Tiny Todd; Rocky Hill]; Angela Baker (Dave's date); Curly (villain, introduction); un-named members of Curly's gang (villains, introduction for all) |
| 7 | - | comic story | 6 | script: Dick French; pencils: Witmer Williams; inks: Witmer Williams | Espionage [Black X]; Batu; Colonel Atwater; Franz Wenzel; Madame Doom (villain); Fritz (villain) |
| 8 | - | comic story | 1 | pencils: Jack Cole; inks: Jack Cole; letters: Jack Cole | Wun Cloo, the Defective Detective; Killer (crook) |
| 9 | The Midville Orphanage Murder | comic story | 5 | script: Robert Turner; pencils: Jim Mooney; inks: Jim Mooney | Wildfire [Carol Vance Martin]; Silas Raddo (villain, death) |
| 10 | - | comic story | 6 | script: Vernon Henkel; pencils: Vernon Henkel; inks: Vernon Henkel | Wings Wendall; Anton Schreck, Karlo; Pete Phillips; Mary Phillips |
| 11 | Jimmy Solves the Hex | text story | 1.5 | script: Robert M. Hyatt | Jimmy Christian; Brandon; Mike Minovitch |
| 12 | The Daily Star Shakedown | comic story | 6 | pencils: Kenneth Julian; inks: Kenneth Julian | Rookie Rankin; Rita; Ma Rankin |
| 13 | - | comic story | 7 | script: George Brenner; pencils: George Brenner; inks: George Brenner | Hugh Hazzard; Bozo the Robot; Akim Topoff (villain, death); Toto (villain) |