| 0 | The Man Who Knows Too Much! | cover | 1 | pencils: Martin Naydel; inks: Martin Naydel | Justice Society of America [Wonder Woman; Green Lantern [Alan Scott]; Johnny Thunder; Hawkman [Carter Hall]; Flash [Jay Garrick]; Atom [Al Pratt]; Dr. Mid-Nite]; Landor (villain) |
| 1 | Editorial Advisory Board | promo (ad from the publisher) | 0.33 | letters: typeset | |
| 2 | Watch for These New Issues of Your Favorite Magazines! | promo (ad from the publisher) | 0.67 | letters: typeset | |
| 3 | The Man Who Knows Too Much [Introduction] | comic story | 6 | script: Gardner Fox; pencils: Martin Naydel; inks: Martin Naydel | Justice Society of America [Wonder Woman [Diana Prince] (Secretary); Green Lantern [Alan Scott]; Johnny Thunder; Hawkman [Carter Hall]; The Atom [Al Pratt]; The Flash [Jay Garrick]; Dr. Mid-Nite [Dr. Charles McNider]]; Landor (villain) |
| 5 | The Man Who Knows Too Much, Chapter 1 | comic story | 5 | script: Gardner Fox; pencils: Joe Kubert; inks: Joe Kubert | Hawkman [Carter Hall]; Landor (villain); Scarface (villain); Scarface's Gang (villains) |
| 7 | The Man Who Knows Too Much, Chapter 2 | comic story | 5 | script: Gardner Fox; pencils: Jon Chester Kozlak; inks: Jon Chester Kozlak | The Atom [Al Pratt]; Landor (villain); Landor's Gang (villains) |
| 8 | The Warden and the Trusty | comic story | 1 | script: Ed Wheelan; pencils: Ed Wheelan; inks: Ed Wheelan; letters: Ed Wheelan | Fat; Slat |
| 9 | It Takes Nerves to Be a Soldier | comic story | 1 | script: Ed Wheelan; pencils: Ed Wheelan; inks: Ed Wheelan; letters: Ed Wheelan | Fat; Slat |
| 10 | The Man Who Knows Too Much, Chapter 3 | comic story | 5 | script: Gardner Fox; pencils: Martin Naydel; inks: Martin Naydel | The Flash [Jay Garrick]; Landor (villain); Landor's Gang (villains) |
| 11 | The Man Who Knows Too Much, Chapter 4 | comic story | 5 | script: Gardner Fox; pencils: Stan Aschmeier; inks: Stan Aschmeier | Dr. Mid-Nite [Dr. Charles McNider]; Landor (villain); Landor's Gang (villains) |
| 12 | Johnny Clung Fast | text story | 2 | script: Jim Robinson | Johnny Fasso (deck boy); 3rd Mate Ruston (death); un-named Captain; Corsa (villain, crew member) |
| 13 | - | comic story | 1 | script: Ed Wheelan; pencils: Ed Wheelan; inks: Ed Wheelan; letters: Ed Wheelan | Fat; Slat |
| 14 | A Few Shots of "Corn" | comic story | 2 | script: Ed Wheelan; pencils: Ed Wheelan; inks: Ed Wheelan; letters: Ed Wheelan | Fat; Slat |
| 15 | The Man Who Knows Too Much, Chapter 5 | comic story | 5 | script: Gardner Fox; pencils: Jon Chester Kozlak; inks: Jon Chester Kozlak | Green Lantern [Alan Scott]; Landor (villain); Landor's Gang (villains) |
| 17 | The Man Who Knows Too Much, Chapter 6 | comic story | 5 | script: Gardner Fox; pencils: Stan Aschmeier; inks: Stan Aschmeier | Johnny Thunder; The Thunderbolt [Archibald]; Landor (villain) |
| 18 | The Man Who Knows Too Much, Conclusion | comic story | 2 | script: Gardner Fox; pencils: Martin Naydel; inks: Martin Naydel | Justice Society of America [Johnny Thunder; Dr. Mid-Nite [Dr. Charles McNider]; The Atom [Al Pratt]; Green Lantern [Alan Scott]; The Flash [Jay Garrick]; Hawkman [Carter Hall]; Wonder Woman [Diana Prince]]; The Thunderbolt [Archibald]; Landor (villain) |