| 0 | - | cover | 1 | pencils: Gill Fox; inks: Gill Fox | Wings Wendall; Archie O'Toole; Espionage [Black Ace] (inset); Bozo the Robot (inset); The Invisible Hood [Kent Thursdton] (inset); Clip Chance (inset) |
| 1 | Madame Doom | comic story | 9 | script: Will Eisner; pencils: Will Eisner; inks: Will Eisner | Espionage [Black Ace]; Batu; Lt. Hayes (death); Colonel Atwater; Agent O-12 (British agent); Agent B-5; Madame Doom (villain, introduction); Agent K-61 (villain, introduction); Madam Doom's thugs (villains, introduction for both) |
| 2 | Rivalry with Ray Snort: Part 2 | comic story | 4 | script: George Brenner; pencils: George Brenner; inks: George Brenner | Clip Chance; Spud; Coach Barr; Vera; Ray Snort (villain); Poke (villain); Slim (villain) |
| 3 | - | comic story | 1 | script: John Devlin; pencils: John Devlin; inks: John Devlin | |
| 4 | The Green Lizard | comic story | 5 | script: Art Pinajian; pencils: Art Pinajian; inks: Art Pinajian | The Invisible Hood [Kent Thurston]; John Blaine; The Green Lizard [Winters, aka "Number Four"] (villain, Blaine's servant, introduction); Green Lizard's thugs [Baldy; others unnamed] (villains, introduction for all) |
| 5 | Attack of the Anarchists | comic story | 4 | script: Bill Smith; pencils: Bill Smith; inks: Bill Smith | Captain Creig Cook [also as Number Twelve]; Inspector Keene; Numbers One through Twelve (villains, gang of hooded anarchists) |
| 6 | Slinging Sammy Baugh | comic story | 1 | script: Gill Fox; pencils: Gill Fox; inks: Gill Fox | |
| 7 | The Submarine Disasters | comic story | 7 | script: George Brenner; pencils: George Brenner; inks: George Brenner | Hugh Hazzard; Bozo the Robot; Pat; Amos Dobbs (introduction, death); Admiral Hull; Commissioner Hunt (mention only); Lugar (villain, introduction, death; Hanz (villain, introduction, death); Leon (villain, introduction, death) |
| 8 | Sheephad Bey | comic story | 2 | script: Will Eisner; pencils: Will Eisner; inks: Will Eisner | Archie O'Toole; Sheephad Bey; Movova |
| 9 | The Shammar Ruby | comic story | 4 | script: Vern Henkel; pencils: Vern Henkel; inks: Vern Henkel | Abdul the Arab (son of Ali Bey, wealthy desert chieftan); Hassan; Sir John Lansing (introduction, death); Lansing's expedition members (introduction for all, all die); British Police (introduction for all); Ronny Forrest (villain, English brigand, introduction, death); Forrest's desert rangers (vill |
| 10 | Carter and the Pirates | comic story | 4 | script: Vern Henkel; pencils: Vern Henkel; inks: Vern Henkel | Chic Carter (ace reporter); Red Brannigan (pilot); Daily Star editor (mention only via telegram); British Marines (introduction for all); Slugger (villain, introduction); Chinese pirates (villains, introduction for all) |
| 11 | The Distressing Dilemma of the Troubled Tradesman | comic story | 2 | script: John Devlin; pencils: John Devlin; inks: John Devlin | Philpot Veep; Waldo; Schultz |
| 12 | Rudolf's Invasion | comic story | 4 | script: Paul Gustavson; pencils: Paul Gustavson; inks: Paul Gustavson; letters: Paul Gustavson | Flash Fulton (newsreel cameraman, introduction); Andy (pilot, introduction); Gabby (newsreel boss, introduction); Chancellor Rudolf (villain, introduction); Chancellor Rudolf imposter (villain, introduction); Rudolf's Army (villains, introduction for all) |
| 13 | The Cloudburst: Part 1 | text story | 2 | script: A. L. Allen | |
| 14 | - | comic story | 1 | | |
| 15 | The Impossible Murder | comic story | 7 | script: Harry Campbell; pencils: Harry Campbell; inks: Harry Campbell | John Law (a scientific detective); The Avenger; June Carter; Mr. Carter (air magnate); Colin Grant (Reid Electric Corporation Superintendent); Amos Reid (death); George Reid; Mr. Lewis; The Avenger [James Rowan] (villain behind the scenes) |
| 16 | The Missing Bombers | comic story | 7 | script: Vern Henkel; pencils: Vern Henkel; inks: Vern Henkel | Wings Wendall; Wendall's commanding officer; Colonel Davis; Curly; Jack; His Excellency (villain, introduction, apparent death) |