| Issue | #140 |
| Published | October 1948 |
| Cover Price | 0.10 |
| Pages | 52 |
| Editing | Whitney Ellsworth (credited); Jack Schiff (actual) |
| Characters | Batman; Robin; The Riddler. |
| Genre | superhero |
| Pencils | Winslow Mortimer |
| Inks | Winslow Mortimer |
| Reprinted | In The Batman Archives (DC, 1990 series) #7 (November 2007); in Batman: Featuring Two-Face and the Riddler (DC, 1995 series) #nn. |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Commissioner James Gordon; Mr. Eagle; Riddler [Edward Nigma] (first appearance; villain; origin). |
| Synopsis | Having grown up an expert and a cheat when it came to solving puzzles, Edward Nigma decides to use this capacity to mystify the Police and Batman.....as the Riddler! |
| Genre | Superhero |
| Script | Bill Finger |
| Pencils | Dick Sprang |
| Inks | Charles Paris |
| Notes | Credits verified by Sprang and Paris per Craig Delich; synopsis added by Craig Delich 1-5-08. |
| Reprinted | In Batman from the Thirties to the Seventies (Crown Publishers, Inc., 1971 series) #73-168329; in Batman: Featuring Two-Face and the Riddler (DC, 1995 series) #nn; in The Batman Archives (DC, 1990 series) #7 (November 2007). |
| Characters | Robotman [Paul Dennis] |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | Jimmy Thompson |
| Inks | Jimmy Thompson |
| Notes | Writer credit by Martin O'Hearn. |
| Characters | Slam Bradley; Shorty Morgan. |
| Genre | detective |
| Pencils | Howard Sherman |
| Inks | Howard Sherman |
| Notes | Inker credit revised by Craig Delich (Nov. 2005). Inker credit preiously given to John Daly. |
| Genre | adventure |
| Letters | typeset |
| Characters | The Boy Commandos [Rip Carter; Andre; Brooklyn; Tex]. |
| Genre | war; adventure |
| Pencils | Curt Swan |
| Inks | Steve Brodie |