| Unofficial Crack Comics Index |
Credits:
| Art | Lou Fine |
| Lettering | Lou Fine |
| Editing | Ed Cronin |
Feature Character(s):
Supporting Character(s):
- Doctor Foster (last in issue #19)
- Wendy Foster
Villain(s):
- Jasper Crow and his gang (selling classified information to a gossip columnist)
- Kalten Winch (first appearance; a popular gossip columnist and news reader)
- Karle Kurt (first appearance; a Nazi spy)
Location(s):
- Washington, DC
Credits:
| Story | George Brenner |
| Art | George Brenner |
| Lettering | George Brenner |
| Editing | Ed Cronin |
Feature Character(s):
Villain(s):
- Cokey Coen and his gang (first appearance for all)
- Mouse (first appearance; a member of Coen's gang who shoots the Clock)
Other Character(s):
- Butch (first appearance; a young orphan girl who nurses Clock back to health; wants to be his "moll")
Comment(s):
- There is a break of several weeks or months in this story, as O'Brien recovers.
Credits:
| Art | Vernon Henkel |
| Lettering | Vernon Henkel |
| Editing | Ed Cronin |
Feature Character(s):
Supporting Character(s):
- Little Pierre
Villain(s):
- German Agitator (first appearance; dies)
- Vastavian Leader (first appearance; dies)
Location(s):
- Vastavia (first appearance; a repressed Eastern European country)
- Vastipol
Credits:
| Story | Fred Guardineer |
| Art | Fred Guardineer |
| Lettering | Fred Guardineer |
| Editing | Ed Cronin |
Feature Character(s):
Villain(s):
- German Air Force (first appearance for all)
Location(s):
- London, England
Credits:
| Story | Art Pinajian |
| Art | Art Pinajian |
| Lettering | Art Pinajian |
| Editing | Ed Cronin |
Feature Character(s):
Supporting Character(s):
- Tubby White and Scrappy Nelson (start the Sure-Fire Detectif Agency)
Villain(s):
- Spies (first appearance for all; attempt to steal aircraft plans)
Location(s):
- Madame undergoes surgery, and her "secret" is kept by the surgeon.
Credits:
| Story | Paul Gustavson |
| Art | Paul Gustavson |
| Lettering | Paul Gustavson |
| Editing | Ed Cronin |
Feature Character(s):
Supporting Character(s):
- Chuck
Villain(s):
- Crow (first appearance; breaks out of prison and steals the Black Widow; possibly dies)