| 0 | - | cover | 0 | pencils: Amanda Conner; inks: Amanda Conner; colors: Alex Sinclair | Harley Quinn |
| 1 | - | cover | 1 | pencils: Bruce Timm; inks: Bruce Timm; colors: Bruce Timm | |
| 2 | Part I - 1992-Present: An Animated Character | foreword, introduction, preface, afterword | 2 | script: Steve Korte | |
| 3 | 24 Hours | comic story | 4 | script: Paul Dini; pencils: Dan DeCarlo; inks: Bruce Timm; colors: Rick Taylor; letters: Richard Starkings | Batman; Joker (villain); Harley Quinn (villain); Poison Ivy (cameo) |
| 4 | The Harley and the Ivy | comic story | 12 | script: Ronnie Del Carmen, Paul Dini; pencils: Ronnie Del Carmen; inks: Ronnie Del Carmen; colors: Ronnie Del Carmen; letters: Richard Starkings | Harley Quinn; Poison Ivy; Batman |
| 5 | - | cover reprint (on interior page) | 1 | pencils: Bruce Timm; inks: Bruce Timm | Batgirl, Barbara Gordon, Harley Quinn, Pamela Isley, Poison Ivy, Harleen Quinzel |
| 6 | Oy to the World | comic story | 38 | script: Paul Dini; pencils: Rick Burchett; inks: Rick Burchett; colors: Rick Taylor; letters: Albie DeGuzman | Batgirl, Harvey Bullock, Barbara Gordon, Commissioner James Gordon, Harley Quinn, Pamela Isley, Poison Ivy, Harleen Quinzel |
| 7 | - | cover reprint (on interior page) | 1 | pencils: Bruce Timm; inks: Bruce Timm | Harley Quinn, Joker, Harleen Quinzel |
| 8 | Breathing Room | comic story | 5 | script: Dan Slott; pencils: Ty Templeton; inks: Terry Beatty; colors: Zylonol; letters: Phil Felix | Harley Quinn, Pamela Isley, Poison Ivy, Harleen Quinzel |
| 9 | A Wedding to Die For! | cover reprint (on interior page) | 1 | pencils: Kelsey Shannon; inks: Kelsey Shannon; letters: Todd Klein | Joker; Harley Quinn |
| 10 | The Bride of Joker | comic story | 18 | script: Ty Templeton; pencils: Rick Burchett; inks: Terry Beatty; colors: Heroic Age; letters: Nick J. Napolitano | Batman; Batgirl [Barbara Gordon]; Joker; Harley Quinn; Poison Ivy; Captain Renee Montoya |
| 11 | Part II - 1999-2010: Harley Gets Real | foreword, introduction, preface, afterword | 2 | script: Steve Korte | |
| 12 | - | cover reprint (on interior page) | 1 | pencils: Alex Ross; inks: Alex Ross; colors: Alex Ross | Harley Quinn; Joker |
| 13 | 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) |
| 14 | All Aboard-- --The Roller Coaster of Love! | cover reprint (on interior page) | 1 | pencils: Terry Dodson; inks: Rachel Dodson; colors: Terry Dodson | Harley Quinn, Harleen Quinzel |
| 15 | An Harley Quinn Romance | comic story | 38 | script: Karl Kesel; pencils: Terry Dodson; inks: Rachel Dodson; colors: Alex Sinclair; letters: Ken Lopez | Buster, Commissioner James Gordon, Jack Happi, Di Happy, Harley Quinn, Pamela Isley, Joker, Lewis LeBeau, Poison Ivy, Harleen Quinzel, Bruce Wayne |
| 16 | Love on the Lam | cover reprint (on interior page) | 1 | pencils: Joe Chiodo; inks: Joe Chiodo; colors: Joe Chiodo | Harley Quinn; Poison Ivy; Joker; Batgirl; Batman |
| 17 | Love on the Lam | comic story | 48 | script: Judd Winick; pencils: Joe Chiodo; inks: Joe Chiodo; colors: Joe Chiodo; letters: Willie Schubert | Harley Quinn; Poison Ivy; Batman; Robin; Batgirl [Harley]; Two-Face |
| 18 | - | cover reprint (on interior page) | 1 | pencils: Carlo Barberi; inks: Álvaro López | Batman; Harley Quinn; Joker |
| 19 | Once More, with Feeling! | comic story | 22 | script: Karl Kesel; pencils: Craig Rousseau; inks: Dan Davis; colors: Guy Major; letters: Ken Lopez | Harley Quinn; Batman; Joker |
| 20 | Poster Child for Crime! | cover reprint (on interior page) | 1 | pencils: Jim Lee; inks: Scott Williams; colors: Alex Sinclair; letters: Todd Klein | Batman [Bruce Wayne]; Catwoman [Selina Kyle]; Harley Quinn [Harleen Quinzel] |
| 21 | Hush, Chapter Six: The Opera | comic story | 22 | script: Jeph Loeb; pencils: Jim Lee; inks: Scott Williams; colors: Alex Sinclair; letters: Richard Starkings | Batman [Bruce Wayne] (also in flashback); Alfred Pennyworth; Leslie Thompkins; Catwoman [Selina Kyle]; Thomas Elliot [Hush] (also in flashback); Harley Quinn [Harleen Quinzel]; Joker |
| 22 | - | cover reprint (on interior page) | 1 | pencils: Claudio Castellini; inks: Claudio Castellini; colors: Alex Sinclair | Harley Quinn [Harleen Quinzel] |
| 23 | The Most Important Day of the Year | comic story | 22 | script: James Patrick; pencils: Joe Quinones; inks: Joe Quinones; colors: Alex Sinclair; letters: Pat Brosseau | Batman [Bruce Wayne]; Harvey Bullock; Dr. Jeremiah Arkham; Harley Quinn [Harleen Quinzel] (villain); Joker (villain); Spider (villain); Mr. Falcone (villain); Joey (villain) |
| 24 | Part III - 2011-Present: Harley Reborn | foreword, introduction, preface, afterword | 2 | script: Steve Korte | |
| 25 | The Hunt for Harley Quinn Starts Here! | cover reprint (on interior page) | 1 | pencils: Paul Renaud; inks: Paul Renaud; colors: Paul Renaud | Suicide Squad [also as Task Force X; Deadshot [Floyd Lawton]; Harley Quinn [Harleen Quinzel]; King Shark; Limelight [Lime; Light]; Savant [Brian Durlin]] |
| 26 | The Hunt for Harley Quinn, Part 1 | comic story | 20 | script: Adam Glass; pencils: Clayton Henry; inks: Scott Hanna, Clayton Henry; colors: Val Staples, Hi-Fi; letters: Jared K. Fletcher | Suicide Squad [also as Task Force X; Deadshot [Floyd Lawton]; Harley Quinn [Harleen Quinzel] (origin); King Shark; Limelight [Lime; Light]; Savant [Brian Durlin]; Yo-Yo]; Aaron Cash; Amanda Waller; Dr. Serrano; Joker |
| 27 | The Origin of Harley Quinn! | cover reprint (on interior page) | 1 | pencils: Ivan Reis; inks: Eber Ferreira; colors: Rod Reis | Suicide Squad [also as Task Force X; Deadshot [Floyd Lawton]; Harley Quinn [Harleen Quinzel]] |
| 28 | The Hunt for Harley Quinn, Conclusion | comic story | 20 | script: Adam Glass; pencils: Clayton Henry, Ig Guara; inks: Scott Hanna; colors: Val Staples; letters: Jared K. Fletcher | Suicide Squad [also as Task Force X; Deadshot [Floyd Lawton]; Harley Quinn [Harleen Quinzel] (origin); King Shark; Limelight [Lime (death); Light]; Savant [Brian Durlin]]; Amanda Waller; Dr. Serrano (flashback); Joker (flashback) |
| 29 | - | cover reprint (on interior page) | 1 | pencils: Amanda Conner; inks: Amanda Conner; colors: Paul Mounts | Harley Quinn [Harleen Quinzel] |
| 30 | Helter Shelter | comic story | 20 | script: Amanda Conner, Jimmy Palmiotti; pencils: Chad Hardin, Stéphane Roux; inks: Chad Hardin, Stéphane Roux; colors: Alex Sinclair; letters: John J. Hill | Harley Quinn [Harleen Quinzel] (villain); Bernie (a beaver); Big Tony; Madame Macabre; Poison Ivy [Pamela Isley] (villain); Rodney |
| 31 | - | cover reprint (on interior page) | 1 | pencils: Amanda Conner; inks: Amanda Conner; colors: Paul Mounts | Harley Quinn; Wonder Woman |
| 32 | Harley Quinn and Wonder Woman | comic story | 38 | script: Jimmy Palmiotti, Amanda Conner; pencils: Amanda Conner, John Timms; inks: Amanda Conner, John Timms, Dave Johnson; colors: Paul Mounts, Hi-Fi; letters: Dave Sharpe | Harley Quinn; Wonder Woman |
| 33 | - | cover reprint (on interior page) | 1 | pencils: Jim Lee; inks: Scott Williams; colors: Alex Sinclair | Suicide Squad [Harley Quinn [Harleen Quinzel]; Enchantress [June Moone]; Killer Croc [Waylon Jones]; Katana [Tatsu Yamashiro]] |
| 34 | Full Mental Jacket | comic story | 8 | script: Rob Williams; pencils: Gary Frank; inks: Gary Frank; colors: Brad Anderson; letters: Rob Leigh | Suicide Squad [Colonel Rick Flag; Harley Quinn [Harleen Quinzel]; Amanda Waller; The Joker (hallucination) |
| 35 | - | illustration | 1 | pencils: Amanda Conner; inks: Amanda Conner; colors: Alex Sinclair | |