| 0 | - | cover | 1 | pencils: Creig Flessel; inks: Creig Flessel | |
| 1 | Mystery!...Thrills! | promo (ad from the publisher) | 0.67 | pencils: Creig Flessel; inks: Creig Flessel | |
| 2 | - | credits, title page | 0.33 | letters: typeset | |
| 3 | The Train Robbery, Part 17 | comic story | 3 | script: Homer Fleming; pencils: Homer Fleming; inks: Homer Fleming | |
| 4 | Episode 13 | comic story | 4 | script: Tom Hickey; pencils: Tom Hickey; inks: Tom Hickey | |
| 5 | The Tsin Lee Incident, Part 5 | comic story | 2 | script: Will Georgi; pencils: Will Georgi; inks: Will Georgi | Dale Daring; Tsin Lee (villain) |
| 6 | Episode 15 | comic story | 4 | script: Merna Gamble, Charles Dickens; pencils: Merna Gamble; inks: Merna Gamble | |
| 7 | The Revenge of Devachan, Part 6 | comic story | 4 | script: Fless; pencils: Fless; inks: Fless | Steve Conrad; Tangi (villain); Devachan (villain); the Apollos (introduction) |
| 8 | - | in-house column | 2 | script: ? (in character as Steve Carson); letters: typeset | |
| 9 | Episode 18 | comic story | 2 | script: Malcolm Wheeler-Nicholson; pencils: Anthony; inks: Anthony | |
| 10 | - | comic story | 2 | script: Vin Sullivan; pencils: Vin Sullivan; inks: Vin Sullivan | The Count (only appearance) |
| 11 | - | comic story | 2 | script: Leo E. O'Mealia; pencils: Leo E. O'Mealia; inks: Leo E. O'Mealia | |
| 12 | Ludwig Van Beethoven | comic story | 1 | script: Richard B. Speed; pencils: Richard B. Speed; inks: Richard B. Speed | |
| 13 | - | letters page | 1 | script: Ann Leslie | |
| 14 | Episode 5 | comic story | 4 | script: Malcolm Wheeler-Nicholson; pencils: Munson Paddock; inks: Munson Paddock | Captain Douglas Stewart; Elsa Von Saxenberg; Sgt. Miller; Corporal Drenoff |
| 15 | - | comic story | 2 | script: Whitney Ellsworth; pencils: Whitney Ellsworth; inks: Whitney Ellsworth | |
| 16 | - | comic story | 2 | script: M. Angelo; pencils: M. Angelo; inks: M. Angelo | Mail Order Murphy (last appearance) |
| 17 | Episode 12 | comic story | 4 | script: Malcolm Wheeler-Nicholson, H. Rider Haggard; pencils: Sven Elvén; inks: Sven Elvén | |
| 18 | - | comic story | 2 | script: Ellis Edwards; pencils: Ellis Edwards; inks: Ellis Edwards | |
| 19 | Pocahontas, by William Makepeace Thackeray | comic story | 2 | script: William Makepeace Thackeray; pencils: Henry Kiefer; inks: Henry Kiefer | |
| 20 | - | comic story | 2 | script: Alger; pencils: Alger; inks: Alger | |
| 21 | - | text article | 1 | script: I. W. Magovern | |
| 22 | Gary Cooper | cartoon | 1 | script: Laidlaw; pencils: Laidlaw; inks: Laidlaw | Gary Cooper; Edward G. Robinson; Katharine Hepburn |
| 23 | Rajah Marajah, Part 14 | comic story | 4 | script: Homer Fleming; pencils: Homer Fleming; inks: Homer Fleming | |
| 24 | Episode 16 | comic story | 4 | script: Malcolm Wheeler-Nicholson; pencils: Sven Elvén; inks: Sven Elvén | |
| 25 | Pearl of the Bleeding Heart, Part 2 | comic story | 4 | script: Will Georgi; pencils: Will Georgi; inks: Will Georgi | Nadir; Henri Duprez (villain, introduction) |
| 26 | - | comic story | 4 | script: Jerome Siegel; pencils: Joe Shuster; inks: Joe Shuster | Steve Carson, Ralph Ventor |
| 27 | - | comic story | 1 | script: Alger; pencils: Alger; inks: Alger | |
| 28 | - | comic story | 1 | | |