| Issue | #40 |
| Published | June 1940 |
| Cover Price | 0.10 |
| Pages | 68 |
| Editing | Whitney Ellsworth |
| Characters | Batman; Robin; Clayface [villain]. |
| Genre | superhero |
| Pencils | Bob Kane (signed) |
| Inks | Bob Kane (signed); Jerry Robinson |
| Letters | typeset |
| Reprinted | In The Batman Archives (DC, 1990 series) #1 (June 1990). |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Julie Madison; Mr. Bentley; Ned Norton; Lorna Dane [D]; Fred Walker [D]; Clayface I [Basil Karlo] (villain, I); Roxy Brenner (villain). |
| Synopsis | Learning that Julie has become a movie actress, Bruce and Dick head over to the studio to meet with her. However, a series of events leads Bruce to believe something bad is going to happen, which it does, and the Batman must lend a hand to stop a killer known as Clayface. |
| Genre | superhero |
| Script | Bill Finger |
| Pencils | Bob Kane (signed) |
| Inks | Bob Kane (signed); Jerry Robinson (backgrounds) |
| Letters | Jerry Robinson |
| Notes | Some info and synopsis added by Craig Delich 2-18-09. |
| Reprinted | In Batman from the Thirties to the Seventies (Crown Publishers, Inc., 1971 series) #73-168329; in The Batman Archives (DC, 1990 series) #1 (June 1990). |
| Characters | Bart Regan; Burdini. |
| Genre | adventure |
| Script | Jerry Siegel? |
| Pencils | Maurice Kashuba (signed) |
| Inks | Maurice Kashuba (signed) |
| Characters | Red Logan |
| Genre | adventure |
| Pencils | Ken Ernst |
| Inks | Ken Ernst |
| Characters | The Crimson Avenger (in hat and cape, Lee Travis); Wing; Mac. |
| Genre | superhero |
| Script | Jack Lehti (signed) |
| Pencils | Jack Lehti (signed) |
| Inks | Jack Lehti (signed) |
| Characters | Speed Saunders |
| Genre | detective |
| Script | Gardner F. Fox? |
| Pencils | Fred Guardineer (signed) |
| Inks | Fred Guardineer (signed) |
| Letters | Fred Guardineer |
| Genre | adventure |
| Script | Gardner F. Fox (signed) |
| Letters | typeset |
| Notes | Story continues in Detective #41. |
| Characters | Steve Malone; Fuhlra. |
| Genre | detective |
| Pencils | Don Lynch (signed) |
| Inks | Don Lynch (signed) |
| Characters | Cliff Crosby; Bridgeman; Les Sharron. |
| Genre | adventure |
| Script | Chad Grothkopf |
| Pencils | Chad Grothkopf |
| Inks | Chad Grothkopf |
| Letters | Chad Grothkopf |
| Characters | Slam Bradley; Shorty Morgan; Luigi Barrati; Carlo Pimento. |
| Genre | detective |
| Script | Jerry Siegel (signed) |
| Pencils | Howard Sherman (signed) |
| Inks | Howard Sherman (signed) |
| Letters | Howard Sherman |