| Issue | #388 |
| Published | June 1969 |
| Cover Price | 0.15 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Joker |
| Genre | superhero |
| Pencils | Irv Novick |
| Inks | Irv Novick |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (added by Gregory Fischer, May 2009). |
| Reprinted | in Showcase Presents Batman (DC, 2006 series) #4 |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Dr. Boomer; Joker (villain) |
| Genre | superhero |
| Script | John Broome |
| Pencils | Bob Brown |
| Inks | Joe Giella |
| Notes | Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. |
| Reprinted | in Showcase Presents Batman (DC, 2006 series) #4 |
| Letters | typeset |
| Notes | Includes a letter from Don McGregor |
| Characters | Batgirl [Barbara Gordon]; Darlene Dawson |
| Synopsis | A fake Batman appears in this story, as well as a costume party with people dressed as Superman, the Flash, and Green Lantern. |
| Genre | superhero |
| Script | Frank Robbins |
| Pencils | Gil Kane |
| Inks | Murphy Anderson |
| Notes | story continued in Detective Comics #389. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. |