| 0 | - | cover | 1 | pencils: Charles Biro; inks: Charles Biro | |
| 1 | The Madman of Mammoth Studios | comic story | 10 | script: Joe Blair; pencils: Ed Smalle; inks: Ed Smalle | Nawson Swelles (villain, introduction, death) |
| 2 | Hercules Slaying the Hydra of Lerna | comic story | 8 | script: Joe Blair; pencils: Elmer Wexler; inks: Elmer Wexler | Zeus (introduction); Hy Dralerny (villain); The Nameless Nine (introduction); Henry Doyle (introduction); Betty Doyle (introduction) |
| 3 | The Island of Baron von Krasner | comic story | 5 | pencils: John Bulthuis; inks: John Bulthuis | Baron von Krasner (villain, introduction); Dorothy Collier (introduction); Leonard Collier (introduction) |
| 4 | The Great Trailer Mystery | comic story | 6 | script: Joe Blair; pencils: Irwin Hasen; inks: Irwin Hasen | The Fox [Paul Patton]; Dick Van Nostrum (introduction) |
| 5 | Breakout in the POW Camp | comic story | 7 | script: Abner Sundell; pencils: Charles Biro; inks: Charles Biro | Corporal Collins; the Nazis |
| 6 | Captured by the Dyaks | comic story | 6 | script: Joe Blair; pencils: George Storm; inks: George Storm | Ty-Gor [Tyrone Gorman]; the Dyaks (villains, introduction, death); Joan Davis (introduction); Mr. Davis (introduction) |
| 7 | Battle in Oculta Valley | comic story | 6 | script: Joe Blair; pencils: Sam Cooper; inks: Sam Cooper | Doc Strong; Alice Rayburn; Professor Harrison; Gustave Ritter (villain) |
| 8 | The Dispatch Robbery | comic story | 6 | script: Joe Blair; pencils: Frank Volpe; inks: Frank Volpe | Loop Logan; the Nazis |
| 9 | The Ulla-Boltyn Conspiracy | comic story | 6 | script: Harry Shorten; pencils: Edd Ashe; inks: Edd Ashe | Sir Boltyn (villain); Ulla (introduction, death); Richard the Lion-Hearted |