| 0 | - | cover | 1 | pencils: Alex Ross; inks: Alex Ross; colors: Alex Ross | Harley Quinn; Joker |
| 1 | - | cover reprint (on interior page) | 1 | pencils: Alex Ross; inks: Alex Ross; colors: Alex Ross | Harley Quinn; Joker |
| 2 | Harley Quinn | comic story | 48 | script: Paul Dini; pencils: Yvel Guichet; inks: Aaron Sowd; colors: Tanya Horie, Richard Horie; letters: Willie Schubert | Batman [Bruce Wayne]; Alfred Pennyworth; Dr. Arkham; Harley Quinn [Harleen Quinzel] (villain); Joker (villain); Penguin [Oswald Cobblepot] (villain); Poison Ivy [Pamela Isley] (villain); Ernie (villain, dies) |
| 3 | The Bet | comic story | 8 | script: Paul Dini; pencils: Ronnie Del Carmen; inks: Ronnie Del Carmen; colors: Zylonol Studio; letters: Rick Parker | Harley Quinn; Batman; Joker; Poison Ivy; Two-Face; Penguin; Vetriloquist; Scarface; Killer Croc |
| 4 | Punchline | comic story | 8 | script: Doug Alexander; pencils: Rob Haynes; inks: Rob Haynes; colors: David Self | Harley Quinn; Batman |
| 5 | - | cover reprint (on interior page) | 1 | pencils: Simone Bianchi; inks: Simone Bianchi | Batman; Harley Quinn |
| 6 | Kind of Like Family | comic story | 22 | script: Paul Dini; pencils: Don Kramer; inks: Wayne Faucher; colors: John Kalisz; letters: Jared K. Fletcher | Batman [Bruce Wayne]; Alfred Pennyworth; Commissioner James Gordon; Officer Harvey Bullock; Harley Quinn [Harleen Quinzel]; Ivar Loxias; Franklin Cott; Scarface [Sugar] (villain); Moose (villain); Ventriloquist [Arnold Wesker] (villain, flashback) |
| 7 | - | cover reprint (on interior page) | 1 | pencils: Simone Bianchi; inks: Simone Bianchi | Harley Quinn; Riddler; Batman |
| 8 | Honor Among Thieves | comic story | 22 | script: Paul Dini; pencils: Don Kramer; inks: Wayne Faucher; colors: John Kalisz; letters: Steve Wands | Batman [Bruce Wayne]; Robin [Tim Drake]; Riddler [Edward Nigma]; Holly Robinson; Mabel; Harleen Quinzel [as Harley Quinn] (only as Harley in flashback); Granny Goodness [disguised as Athena]; Desaad; Lisa Ellen Newman [also as Sally Campbell]; Secret Six [Scandal Savage; Knockout; Catman [Thomas Bla |
| 9 | - | cover reprint (on interior page) | 1 | pencils: Claudio Castellini; inks: Claudio Castellini; colors: Alex Sinclair | Harley Quinn [Harleen Quinzel] |
| 10 | The Most Important Day of the Year | comic story | 22 | script: James Patrick; pencils: Joe Quinones; inks: Joe Quinones; colors: Alex Sinclair; letters: Patrick Brosseau | Batman [Bruce Wayne]; Harvey Bullock; Dr. Jeremiah Arkham; Harley Quinn [Harleen Quinzel] (villain); Joker (villain); Spider (villain); Mr. Falcone (villain); Joey (villain) |
| 11 | Justice Is Served | comic story | 8 | script: Maris Wicks; pencils: Joe Quinones; inks: Joe Quinones; colors: Joe Quinones; letters: Rob Leigh | Harley Quinn; Poison Ivy; Alfred Pennyworth; Batman |
| 12 | Role Models | comic story | 8 | script: Paul Dini; pencils: Stéphane Roux; inks: Stéphane Roux; letters: Jared K. Fletcher | Batman; James Gordon; Poison Ivy; Harley Quinn |
| 13 | - | cover reprint (on interior page) | 1 | pencils: David Williams; inks: David Williams; colors: Elizabeth Breitweiser | Batman |
| 14 | Dr. Quinn's Diagnosis | comic story | 20 | script: Jim Zubkavich; pencils: Neil Googe; inks: Neil Googe; colors: Kathryn Layno; letters: Saida Temofonte | Batman; Harley Quinn; Thomas Wayne (flashback); Martha Wayne (flashback); Alfred Pennyworth |
| 15 | - | cover reprint (on interior page) | 1 | pencils: Chris Burnham; inks: Chris Burnham; colors: Nathan Fairbairn | Batman [Bruce Wayne]; Harley Quinn [Harleen Quinzel] |
| 16 | Harley Lives | comic story | 20 | script: Matt Kindt; pencils: Neil Googe; inks: Neil Googe; colors: Wil Quintana; letters: Taylor Esposito | Harley Quinn [Harleen Quinzel] (origin, villain); Bob; Joe; Mr. Quinzel; Mrs. Quinzel; Black Manta (cameo, villain); Captain Cold [Leonard Snart] (cameo, villain); Deadshot [Floyd Lawton] (villain); Grodd (cameo, villain); Joker (villain); Mr. Freeze [Victor Fries] (cameo, villain); Penguin [Oswald |