| 0 | - | cover | 1 | pencils: Jim Lee; inks: Scott Williams; colors: Alex Sinclair | |
| 1 | The Happiest of Accidents | foreword, introduction, preface, afterword | 2 | script: Paul Dini | |
| 2 | - | cover reprint (on interior page) | 1 | pencils: Mike Parobeck; inks: Rick Burchett; letters: Todd Klein | Batgirl [Barbara Gordon]; Poison Ivy; Harley Quinn |
| 3 | Batgirl: Day One | comic story | 22 | script: Kelley Puckett; pencils: Mike Parobeck; inks: Rick Burchett; colors: Rick Taylor; letters: Tim Harkins | Batgirl [Barbara Gordon]; Commissioner Gordon (guest); Catwoman (villain); Poison Ivy (villain); Harley Quinn (villain, introduction); Batman (cameo) |
| 4 | - | cover reprint (on interior page) | 1 | pencils: Ty Templeton; inks: Ty Templeton; colors: Ty Templeton | Joker |
| 5 | Joker's Last Laugh! | comic story | 22 | script: Ty Templeton; pencils: Brandon Kruse; inks: Terry Beatty; colors: Linda Medley; letters: Tim Harkins | Batman [Bruce Wayne]; Robin [Dick Grayson]; Joker (villain); Harley Quinn [Harleen Quinzel] (villain) |
| 6 | - | cover reprint (on interior page) | 1 | pencils: Bruce Timm; inks: Shane Glines; colors: Lee Loughridge | Harley Quinn, Joker, Harleen Quinzel |
| 7 | Mightier Than the Sword | comic story | 22 | script: Ty Templeton; pencils: Rick Burchett; inks: Terry Beatty; colors: Lee Loughridge; letters: Tim Harkins | Tim Drake, Dick Grayson, Harley Quinn, Pamela Isley, Joker, Nightwing, Alfred Pennyworth, Poison Ivy, Harleen Quinzel, Robin |
| 8 | - | cover reprint (on interior page) | 1 | pencils: Terry Dodson; inks: Rachel Dodson; colors: Terry Dodson | Catwoman, Harley Quinn, Pamela Isley, Selina Kyle, Poison Ivy, Harleen Quinzel |
| 9 | Welcome to the Party! | comic story | 22 | script: Karl Kesel; pencils: Terry Dodson; inks: Rachel Dodson; colors: Alex Sinclair; letters: Ken Lopez | Bernadeth, Catwoman, Dr. Carrie Chispazo, Bo Donner, Rose Forrest, Mercy Graves, Jack Happi, Harley Quinn, Bonny Hoffman, Pamela Isley, Jewelee, Selina Kyle, Lashina, Carmen Leno |
| 10 | The Bet | comic story | 8 | script: Paul Dini; pencils: Ronnie Del Carmen; inks: Ronnie Del Carmen; colors: Zylonol Studio; letters: Rick Parker | Batman, Oswald Cobblepot, Jonathan Crane, Harvey Dent, Harley Quinn, Pamela Isley, Joker, Waylon Jones, Killer Croc, Penguin, Poison Ivy, Harleen Quinzel, Scarecrow, Scarface |
| 11 | - | cover reprint (on interior page) | 1 | pencils: Simone Bianchi; inks: Simone Bianchi; colors: Simone Bianchi | Batman; Harley Quinn |
| 12 | 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) |
| 13 | - | cover reprint (on interior page) | 1 | pencils: Guillem March; inks: Guillem March; colors: Guillem March | Catwoman [Selina Kyle]; Harley Quinn [Harleen Quinzel]; Poison Ivy [Pamela Isley]; Joker |
| 14 | Hell Hath No Fury, Part One | comic story | 20 | script: Peter Calloway; pencils: Andres Guinaldo, Ramón Bachs; inks: Lorenzo Ruggiero, Ramón Bachs; colors: J. D. Smith; letters: Steve Wands | Harley Quinn [Harleen Quinzel]; Dr. Alyce Sinner [as Alice Sinner]; Aaron Cash; Bryant; Waters; Herb; Adam Hendricks; Roland (flashback); Mr. Hendricks (flashback); Joker (villain); Clayface [Basil Karlo] (villain) |
| 15 | - | cover reprint (on interior page) | 1 | pencils: Guillem March; inks: Guillem March; colors: Guillem March | Harley Quinn [Harleen Quinzel] |
| 16 | Hell Hath No Fury, Part Two | comic story | 20 | script: Peter Calloway; pencils: Andres Guinaldo; inks: Lorenzo Ruggiero; colors: J. D. Smith; letters: Dave Sharpe | Harley Quinn [Harleen Quinzel]; Catwoman [Selina Kyle]; Poison Ivy [Pamela Isley]; Batman [Bruce Wayne] (cameo flashback); Dr. Alyce Sinner (cameo flashback); Aaron Cash; Mrs. Cash (flashback); Aaron Cash's son (flashback, death); Joker (villain); Clayface [Basil Karlo] (cameo flashback, villain) |
| 17 | Right Place, Right Time | foreword, introduction, preface, afterword | 2 | script: Amanda Conner, Jimmy Palmiotti | |
| 18 | - | cover reprint (on interior page) | 1 | pencils: Amanda Conner; inks: Amanda Conner; colors: Paul Mounts | Harley Quinn [Harleen Quinzel]; Bernie (a beaver) |
| 19 | Killin' Time | comic story | 9 | script: Amanda Conner, Jimmy Palmiotti; pencils: Darwyn Cooke; inks: Darwyn Cooke; colors: Dave Stewart; letters: John J. Hill | Harley Quinn [Harleen Quinzel]; Bernie (a beaver); Big Tony; Harold Tyme; Lillian Tyme; Mr. Tyme; Mrs. Tyme; Queenie |
| 20 | - | cover reprint (on interior page) | 1 | pencils: Amanda Conner; inks: Amanda Conner; colors: Paul Mounts | Harley Quinn; Poison Ivy; Joker; Batman; Red Tool |
| 21 | Diva Las Vegas | comic story | 8 | script: Amanda Conner, Jimmy Palmiotti; pencils: Amanda Conner; inks: Amanda Conner; colors: Paul Mounts; letters: Dave Sharpe | Harley Quinn; Poison Ivy; Catwoman; Red Tool |
| 22 | - | illustration | 1 | pencils: Bengal; inks: Bengal; colors: Bengal | Harleen Quinzel [Harley Quinn] |
| 23 | - | illustration | 1 | pencils: Dustin Nguyen; inks: Dustin Nguyen; colors: Dustin Nguyen | Harley Quinn |
| 24 | Birthday Blues | comic story | 8 | script: Paul Dini; pencils: Chad Hardin; inks: Chad Hardin; colors: Alex Sinclair; letters: Dave Sharpe | Joker; Harley Quinn; Batman (flashback); Batgirl (flashback); Robin (flashback); Joker; Riddler (cameo); Killer Croc (cameo); Tweedle Dee (cameo); Tweedle Dum (cameo); Penguin (cameo); Mad Hatter (cameo); White Rabbit (cameo); Catwoman; Poison Ivy; Captain Boomerang |
| 25 | - | illustration | 1 | pencils: Babs Tarr; inks: Babs Tarr; colors: Babs Tarr | Harley Quinn; Poison Ivy; Catwoman |
| 26 | - | illustration | 1 | pencils: Annie Wu; inks: Annie Wu; colors: Annie Wu | Harley Quinn |
| 27 | Somewhere That's Green! | comic story | 8 | script: Daniel Kibblesmith; pencils: David Lafuente; inks: David Lafuente; colors: John Rauch; letters: Tom Napolitano | Harley Quinn; Poison Ivy; Swamp Thing |
| 28 | - | illustration | 1 | pencils: Greg Tocchini; inks: Greg Tocchini; colors: Greg Tocchini | Harley Quinn |
| 29 | - | illustration | 1 | pencils: Kamome Shirahama; inks: Kamome Shirahama; colors: Kamome Shirahama | Harley Quinn |
| 30 | Bird Psychology | comic story | 8 | script: Chip Zdarsky; pencils: Joe Quinones; inks: Joe Quinones; colors: Joe Quinones; letters: Corey Breen | Harley Quinn; Joker; Batman; Robin; Commissioner Gordon; Harvey Bullock; Detective Montoya |
| 31 | - | cover reprint (on interior page) | 1 | pencils: Amanda Conner; inks: Amanda Conner; colors: Paul Mounts | |
| 32 | Be Careful What You Wish For | comic story | 38 | script: Amanda Conner, Jimmy Palmiotti; pencils: Amanda Conner, Chad Hardin, Otto Schmidt, Ben Caldwell; inks: Amanda Conner, Chad Hardin, Otto Schmidt, Ben Caldwell; colors: Paul Mounts, Alex Sinclair, Otto Schmidt, Ben Caldwell; letters: John J. Hill, Dave Sharpe | |
| 33 | Lightning in a Bottle | foreword, introduction, preface, afterword | 2 | script: Jordie Bellaire | |
| 34 | - | illustration | 1 | pencils: Laura Braga; inks: Laura Braga; colors: Luis Guerrero | |
| 35 | Escape Theory | comic story | 16 | script: Mark Russell; pencils: Laura Braga; inks: Laura Braga; colors: Luis Guerrero; letters: Marshall Dillon | |
| 36 | Chapter Fourteen | illustration | 1 | pencils: Greg Smallwood; inks: Greg Smallwood; colors: Greg Smallwood | |
| 37 | Fixer-Upper | comic story | 10 | script: Jordie Bellaire; pencils: Greg Smallwood; inks: Greg Smallwood; colors: Greg Smallwood; letters: Becca Carey | Harley Quinn [Harleen Quinzel]; The Joker (in a photograph, flashback, and as a doll only) |
| 38 | The Joker War, Part Four | cover reprint (on interior page) | 1 | pencils: David Finch; inks: David Finch; colors: Tomeu Morey | Batman, Harley Quinn, Alexis Kaye, Punchline, Harleen Quinzel, Bruce Wayne |
| 39 | The Joker War, Part Four | comic story | 19 | script: James Tynion IV; pencils: Jorge Jiménez; inks: Jorge Jiménez; colors: Tomeu Morey; letters: Clayton Cowles | Batman, Catwoman, Oswald Cobblepot, Jonathan Crane, Harley Quinn, Joker, Waylon Jones, Alexis Kaye, Killer Croc, Selina Kyle, Edward Nigma, Penguin, Alfred Pennyworth, Professor Pyg |
| 40 | Submissive | comic story | 9 | script: Stjepan Šejić; pencils: Stjepan Šejić; inks: Stjepan Šejić; colors: Stjepan Šejić; letters: Pat Brosseau | Harley Quinn; The Penguin [Oswald Cobblepot]; Catwoman [Selina Kyle]; Poison Ivy [Pamela Isley]; |
| 41 | Three Decades of Mischief | foreword, introduction, preface, afterword | 1 | pencils: various; inks: various; colors: various; letters: typeset | |
| 42 | - | illustration | 1 | pencils: Jim Lee | |
| 43 | Biographies | text article | 3 | letters: typeset | |