| 0 | - | cover | 1 | pencils: Ed Cronin; inks: Ed Cronin | The Clock [Brian O'Brien] |
| 1 | The Metropolis Museum Mystery | comic story | 4 | script: Will Eisner; pencils: Will Eisner, Lou Fine; inks: Lou Fine | Doll Man [Darrel Dane]; Sidney Ambrose (villain, introduction) |
| 2 | - | comic story | 2 | script: Ed Reed; pencils: Ed Reed; inks: Ed Reed | |
| 3 | - | comic story | 4 | script: Ham Fisher; pencils: Ham Fisher; inks: Ham Fisher | |
| 4 | - | comic story | 4 | script: Bob Zuppke; pencils: Walt Depew; inks: Walt Depew | |
| 5 | - | comic story | 2 | pencils: John Devlin; inks: John Devlin | Lala Palooza |
| 6 | The Kidnapping of Donna Grant: Part 2 | comic story | 4 | script: Alfred Andriola; pencils: Alfred Andriola; inks: Alfred Andriola | Charlie Chan |
| 7 | - | comic story | 1 | script: George Marcoux; pencils: George Marcoux; inks: George Marcoux | |
| 8 | Creating Lasso | comic story | 1 | script: Bill Sakren; pencils: Bill Sakren; inks: Bill Sakren | |
| 9 | - | comic story | 2 | pencils: John Devlin; inks: John Devlin | |
| 10 | - | comic story | 2 | script: J. P. McEvoy; pencils: John Striebel; inks: John Striebel | |
| 11 | - | illustration | 1 | script: A. L. Allen; pencils: Walt Depew; inks: Walt Depew | |
| 12 | The Shooting of Ted Holt | comic story | 5 | script: George Brenner; pencils: George Brenner; inks: George Brenner | The Clock [Brian O'Brien]; Ted Holt (first appearance; death); The Reaper (first appearance; villain) |
| 13 | - | comic story | 2 | script: Rube Goldberg; pencils: Rube Goldberg; inks: Rube Goldberg | |
| 14 | - | comic story | 4 | script: Monte Barrett; pencils: Russell Ross; inks: Russell Ross | |
| 15 | The Flying Death | comic story | 4 | script: Art Pinajian; pencils: Art Pinajian; inks: Art Pinajian | Chief Big Eagle (first appearance; villain) |
| 16 | Resolved | comic story | 2 | script: H. J. Tuthill; pencils: H. J. Tuthill; inks: H. J. Tuthill | |
| 17 | The Crownsville Train Wreck | comic story | 4 | script: Bill Smith; pencils: Bill Smith; inks: Bill Smith | Rance Keane; Gus Dropper (first appearance; villain) |
| 18 | Whispering Walls | text story | 2 | script: A. L. Allen | |
| 19 | Black Flint | comic story | 4 | script: Vern Henkel; pencils: Vern Henkel; inks: Vern Henkel | Captain Fortune [Tyrone Fortune]; Black Flint (first appearance; villain; death) |
| 20 | Episode 29 | comic story | 2 | script: John Welch; pencils: John Welch; inks: John Welch | |
| 21 | The Crop-Killing Planes | comic story | 4 | script: Bob Powell; pencils: Bob Powell; inks: Bob Powell | Spin Shaw [Capt. S. R. "Spin" Shaw] (introduction) |
| 22 | - | comic story | 4 | script: Lank Leonard; pencils: Lank Leonard; inks: Lank Leonard | |