| 0 | - | cover | 1 | pencils: Gill Fox; inks: Gill Fox | Wings Wendall; Archie O'Toole; Black X; Bozo the Robot; Abdul the Arab |
| 1 | The Suicide Torpedoes | comic story | 9 | script: Will Eisner; pencils: Will Eisner; inks: Will Eisner; letters: Will Eisner | Black X; Batu; Colonel Atwater; Madame La Coquin (villain, death); the Death Squadron (villains, introduction for all) |
| 2 | The Masked One | comic story | 4 | script: Vern Henkel; pencils: Vern Henkel; inks: Vern Henkel | Abdul; Hassan; The Masked One [Webb] |
| 3 | The Voice and the Red Star Diamond | comic story | 4 | pencils: Stan Asch; inks: Stan Asch | Captain Craig Cook; Lola Barnes; Sir Sidney Barnes; Kelly; The Voice (villain, introduction) |
| 4 | King Crunch | comic story | 2 | script: Will Eisner; pencils: Will Eisner; inks: Will Eisner; letters: Will Eisner | Archie O'Toole; King Crunch |
| 5 | The Red Clay Clue | comic story | 4 | script: Scott Sheridan; pencils: Scott Sheridan; inks: Scott Sheridan | Clip Chance; Coach Barr; Marko (introduction) |
| 6 | - | comic story | 1 | script: John Devlin; pencils: John Devlin; inks: John Devlin | |
| 7 | Battling the Bund | comic story | 7 | script: Vern Henkel; pencils: Vern Henkel; inks: Vern Henkel | Wings Wendall; Heinrich (introduction); Karla (introduction); The Bund (villains); The Nazis (villains) |
| 8 | The Episode of the Malicious Mite | comic story | 2 | script: John Devlin; pencils: John Devlin; inks: John Devlin | Philpot Veep; Waldo |
| 9 | - | comic story | 1 | pencils: Arthur Beeman; inks: Arthur Beeman | |
| 10 | The Arson Robberies | comic story | 5 | script: Art Pinajian; pencils: Art Pinajian; inks: Art Pinajian | Invisible Justice [Kent Thurston]; John Steele; Weymann Brent (villain, introduction); an arson gang (villains, introduction for all) |
| 11 | The Kidnapping of Babs Barton | comic story | 4 | script: Paul Gustavson; pencils: Paul Gustavson; inks: Paul Gustavson; letters: Paul Gustavson | Flash Fulton; Babs Barton (introduction); Andy; Nick (villain); Trigger (villain); Punchy (villain) |
| 12 | Von Fritz's Assassination Plot | comic story | 4 | script: Vern Henkel; pencils: Vern Henkel; inks: Vern Henkel | Chic Carter; King Ludwig (introduction); Princess Maria (of Moravia, introduction); General Von Fritz (villain, introduction) |
| 13 | The Master of Mu: Part 2 | text story | 2 | script: Robert M. Hyatt | |
| 14 | Red Dutton | comic story | 1 | script: Gill Fox; pencils: Gill Fox; inks: Gill Fox | |
| 15 | Double Death Trap | comic story | 5 | script: Harry Campbell; pencils: Harry Campbell; inks: Harry Campbell | John Law; June Carter; Albert Lewis; The Avenger (villain) |
| 16 | Advertising the Gangsters | comic story | 2 | script: Gill Fox; pencils: Gill Fox; inks: Gill Fox | Wun Cloo |
| 17 | The Master Plan of Rudolf Hitz | comic story | 7 | script: Wayne Reid; pencils: Wayne Reid; inks: Wayne Reid | Hugh Hazzard; Bozo the Iron Man; Scar Papalle (introduction, death); Jim Hart (introduction); Sergeant Kelly (introduction); Sergeant Hill (introduction); Sergeant Dolan (introduction); Captain John "Ironsides" Dolan (introduction); Rudolf Hitz (villain, Jarmanian spy); Olga (villain, Jarmanian spy, |