- Script
- Bill Finger
- Pencils
- Bob Kane (signed as Rob't Kane)
- Inks
- Bob Kane (signed as Rob't Kane); Greg Theakston (black and white reconstruction)
- Colors
- Bob LeRose (color reconstruction); Daniel Vozzo (color reconstruction); ? (original colors)
- Letters
- Bob Kane
- Genre
- superhero
- Characters
- The Bat-Man [Bruce Wayne] (introduction); Commissioner James Gordon (introduction); Lambert; Steven Crane (death); Paul Rogers; Alfred Stryker (villain); Jennings (villain)
- Synopsis
- In his first case, the Bat-Man investigates the murder of a chemical tycoon, discovering that one of his partners murdered him to steal the secret contracts that would leave him as the sole owner of the Apex Chemical Corporation.
- Reprints
This is not a reprint of this story as originally published. Instead, it is a redrawn (traced), re-lettered, and censored copy which was originally published in Detective Comics 387. A notable change is that the murder victim on page 2, panel 2 does not have a knife jutting out of his back, as he did in the originally-published version of this story.
- Script
- Bill Finger
- Pencils
- Bob Kane
- Inks
- Bob Kane; Sheldon Moldoff (backgrounds, verified by Moldoff); Greg Theakston (black and white reconstruction)
- Colors
- Bob LeRose (color reconstruction); Daniel Vozzo (color reconstruction); ? (original colors)
- Letters
- Sheldon Moldoff (verified by Moldoff)
- Genre
- superhero
- Characters
- Batman [Bruce Wayne] (origin)
- Synopsis
- Bruce Wayne's parent are murdered by a cheap crook, and young Bruce vows to avenge their deaths by warring on all criminals.
- Reprints
Splash panel reprinted from DETECTIVE COMICS #34; rest of story reprinted from DETECTIVE COMICS #33.
- Script
- Bill Finger
- Pencils
- Bob Kane
- Inks
- Bob Kane; Jerry Robinson (backgrounds, verified by Robinson); Greg Theakston (black and white reconstruction)
- Colors
- Bob LeRose (color reconstruction); Daniel Vozzo (color reconstruction); ? (original colors)
- Letters
- Jerry Robinson (verified by Robinson)
- Genre
- superhero
- Characters
- Batman [Bruce Wayne]; Robin [Dick Grayson]; James Gordon; Chief of Police Chalmers (Death); Edgar Martin (Death); The Joker (Villain)
- Synopsis
- The Joker escapes from prison to continue his rampage of death and to steal the famed Cleopatra necklace and Fire Ruby.
- Reprints
As recounted in various sources, the Joker was supposed to die of his stab wound at the end of the story, but the editors decided this villain was too good to kill off, so the last panels were re-drawn to show him surviving. The last panel of the story, titled "Golden Rules for Robin's Regulars", introduces readers to "Robin's Code" of conduct.