| Issue | #3 |
| Published | Summer 1962 |
| Cover Price | 0.25 USD |
| Pages | 84 |
| Editing | Jack Schiff |
| Notes | On Sale Date - June 19th 1962 |
| Characters | Batman; Robin; Two-Face; Joker; Gorilla Boss; Human Firefly; Mirror Man; Mad Hatter |
| Genre | Superhero |
| Pencils | vignettes |
| Inks | vignettes |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Mad Hatter [Jervis Tetch] |
| Synopsis | The Mad Hatter has a superb collection of stolen hats, but with Batman's cowl missing it is incomplete. The Dynamic Duo must then thwart a number of schemes designed to part the Masked Manhunter from his cowl. |
| Genre | Superhero |
| Script | Bill Finger |
| Pencils | Sheldon Moldoff |
| Inks | Charles Paris |
| Notes | 1966 Batman T.V. Series, episodes 69 - The Contaminated Cowl and 70 - The Mad Hatter Runs Fowl, were based on this story. 1st appearance of Mad Hatter 2 (see Batman (DC, 1940 Series) #49 (Oct-Nov 1948) for Mad Hatter 1). Mad Hatter 2 is later revealed as an imposter. |
| Reprinted | from Detective Comics (DC, 1937 series) #230 (April 1956) |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Firefly [Garfield Lynns] |
| Synopsis | When theatrical lighting director Garfield Lynns is prevented from staging his first robbery, he makes his escape thanks to the light given off by a firefly. Inspired, he assumes the identity of the costumed criminal, Firefly. |
| Genre | Superhero |
| Script | Ed (France) Herron |
| Pencils | Dick Sprang |
| Inks | Charles Paris |
| Notes | 1st appearance and origin of Firefly. |
| Reprinted | from Detective Comics (DC, 1937 series) #184 (June 1952) |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Barney Barrows [Mental Giant] |
| Synopsis | A freak accident gives police janitor Barney Barrow a super advanced brain, he then blackmails the Dynamic Duo into aiding him with his ever more dangerous methods of crime fighting. |
| Genre | Superhero |
| Script | Edmond Hamilton |
| Pencils | Dick Sprang |
| Inks | Charles Paris |
| Reprinted | from Detective Comics (DC, 1937 series) #217 (March 1955) |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; The Joker; Brice; Hopkins; Hop Dooley |
| Synopsis | The Clown Prince of Crime recruits some new members for his gang, all of whom are perfectly suited for specific felonies. |
| Genre | Superhero |
| Script | David Vern |
| Pencils | Lew Sayre Schwartz |
| Inks | Charles Paris |
| Reprinted | from World's Finest Comics (DC, 1941 series) #59 (July-August 1952) |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Gorilla Boss [also as George 'Boss' Dyke] |
| Synopsis | Executed criminal George 'Boss' Dyke's brain is transplanted into a gorilla's head, after amassing a fortune from his crimes, his next plan is even more bizarre. He intends to transplant his brain again, but this time into Batman's head! |
| Genre | Superhero |
| Script | David Vern |
| Pencils | Lew Sayre Schwartz |
| Inks | Charles Paris |
| Reprinted | from Batman (DC, 1940 series) #75 (February-March 1953) |
| Characters | Batman; Robin; Paul Sloane [Two-Face]; Harvey Dent |
| Synopsis | Actor Paul Sloane is disfigured in an accident, this unhinges his mind and causes him to turn to crime as the second Two-Face. |
| Genre | Superhero |
| Script | Bill Finger |
| Pencils | Sheldon Moldoff |
| Inks | Charles Paris |
| Notes | The final 2 panels of page 2 and the 1st panel of page 3 have been cut and substituted with 2 newly created panels. The original story depicted actor Paul Sloane becoming Two-Face after being scarred by a vial of acid, the version in this issue has Sloane being disfigured by an exploding Klieg light. 1st appearance of Paul Sloane, fittingly the second Two-Face. |
| Reprinted | from Batman (DC, 1940 series) #68 (December 1951-January 1952) |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Mirror Man [Ventris] |
| Synopsis | Ventris, a convict, escapes jail with the help of a broken mirror. He adopts the identity of the Mirror Man and sets out to uncover Batman's secret identity by using his X-Ray Mirror. |
| Genre | Superhero |
| Script | Bill Finger |
| Pencils | Sheldon Moldoff |
| Inks | Charles Paris |
| Notes | panel 6 on page 8 has been re-captioned to fix a minor story telling error when originally published. |
| Reprinted | from Detective Comics (DC, 1937 series) #213 (November 1954) |