| Issue | #5 |
| Published | June 1941 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Victor Fox |
| Pencils | Arthur Cazeneuve? |
| Inks | Arthur Cazeneuve? |
| Characters | Flame; Dr. Drool |
| Pencils | Arthur Cazeneuve? |
| Inks | Arthur Cazeneuve? |
| Characters | Flame; Fritz (first appearance; villain; death); other spies (first appearance; villains; all die) |
| Script | Nathaniel Nitkin [as N. N. Nathaniel] |
| Letters | typeset |
| Characters | Flame; Fritz (first appearance; villain; death); other spies (first appearance; villains; all die) |
| Notes | This is a different Fritz than the one in "[The Flying Fortress Saboteurs]." |
| Characters | Zanzibar; Leblan (first appearance; villain) |
| Pencils | George Tuska |
| Inks | George Tuska |
| Notes | app. between MYSTERY MEN #23 / 24 |
| Characters | Voodoo Man (villain); a trader (first appearance; villain; death) |
| Pencils | ? (Allen Spectre) |
| Characters | Captain Savage; Von Seidorff (first appearance; villain; death); Nazis (first appearance; villains) |
| Pencils | Charles A. Winter? |
| Inks | Charles A. Winter? |