| Issue | #4 |
| Published | January 1948 |
| Frequency | monthly |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Raymond C. Krank |
| Notes | cover based on text story |
| Script | Gardner Fox |
| Letters | typeset |
| Pencils | Ogden Whitney |
| Inks | Ogden Whitney |
| Reprinted | In Undercover Girl (Magazine Enterprises, 1952 series) #6 [A-1 #98] |
| Characters | Mark Treak |
| Pencils | Fred Guardineer |
| Inks | Fred Guardineer |
| Pencils | Paul Parker |
| Inks | Paul Parker |
| Pencils | L. B. Cole |
| Inks | L. B. Cole |
| Pencils | Ogden Whitney |
| Inks | Ogden Whitney |
| Reprinted | in Manhunt (Magazines Enterprises, 1947 series) #13 [A-1 #63] |
| Pencils | Joe Shuster |
| Inks | Joe Shuster |
| Notes | House Ad |