| 0 | - | cover | 1 | pencils: Guillem March; inks: Guillem March; colors: Arif Prianto | Harley Quinn |
| 1 | - | cover reprint (on interior page) | 1 | pencils: Guillem March; inks: Guillem March; colors: Arif Prianto | Harley Quinn |
| 2 | - | cover reprint (on interior page) | 1 | pencils: Frank Cho; inks: Frank Cho; colors: Sabine Rich | |
| 3 | California or Death, Chapter 1: Harleen the Queen | comic story | 22 | script: Sam Humphries; pencils: Sami Basri; inks: Sami Basri; colors: Hi-Fi; letters: Dave Sharpe | Harley Quinn; Alicia the Crusher; Booster Gold; Baby Face; Becca; Crux; Rosie the Riveter; Dummy (cameo) |
| 4 | - | cover reprint (on interior page) | 1 | pencils: Riley Rossmo; inks: Riley Rossmo; colors: Ivan Plascencia | Harley Quinn; Booster Gold |
| 5 | - | cover reprint (on interior page) | 1 | pencils: Frank Cho; inks: Frank Cho; colors: Sabine Rich | |
| 6 | California or Death, Chapter 2: World's Greatest Detective | comic story | 22 | script: Sam Humphries; pencils: Sami Basri; inks: Sami Basri; colors: Hi-Fi; letters: Dave Sharpe | Harley Quinn; Booster Gold; Dummy; Rosie the Riveter; Baby Face; Becca; Shepherd (cameo); Alicia the Crusher (flashback) |
| 7 | - | cover reprint (on interior page) | 1 | pencils: Guillem March; inks: Guillem March; colors: John Kalisz, Arif Prianto | Harley Quinn; Booster Gold |
| 8 | - | cover reprint (on interior page) | 1 | pencils: Frank Cho; inks: Frank Cho; colors: Sabine Rich | |
| 9 | California or Death, Chapter 3: The Gold Coast | comic story | 22 | script: Sam Humphries; pencils: Abel; inks: Abel; colors: Hi-Fi; letters: Dave Sharpe | Harley Quinn; Booster Gold; Baby Face; Jonathan Wittleson; Becca |
| 10 | - | cover reprint (on interior page) | 1 | pencils: Guillem March; inks: Guillem March; colors: Romulo Fajardo Jr., Arif Prianto | Harley Quinn; Rosie the Riveter |
| 11 | - | cover reprint (on interior page) | 1 | pencils: Frank Cho; inks: Frank Cho; colors: Sabine Rich | Harley Quinn; Nathan the Dachshund |
| 12 | California or Death, Chapter 4: Lost and Found | comic story | 22 | script: Sam Humphries; pencils: Sami Basri; inks: Sami Basri; colors: Hi-Fi; letters: Dave Sharpe | Harley Quinn; Booster Gold; Jonathan Wittleson [Johnny Witts]; Charity Xo; Baby Face; Shepherd the Ubermensch; Becca |
| 13 | - | cover reprint (on interior page) | 1 | pencils: Guillem March; inks: Guillem March; colors: Arif Prianto | Harley Quinn |
| 14 | - | cover reprint (on interior page) | 1 | pencils: Frank Cho; inks: Frank Cho; colors: Sabine Rich | |
| 15 | California or Death, Chapter 5: Death | comic story | 22 | script: Sam Humphries; pencils: Sami Basri; inks: Sami Basri; colors: Hi-Fi; letters: Dave Sharpe | Harley Quinn; Granny Goodness; Jonathan Wittleson; Booster Gold; Becca; Darkseid (flashback); Alicia the Crusher (hallucination); Sharon Quinzel (hallucination); Charity Xo (cameo) |
| 16 | - | cover reprint (on interior page) | 1 | pencils: Guillem March; inks: Guillem March; colors: Arif Prianto | Harley Quinn; Batman; Catwoman; Poison Ivy |
| 17 | - | cover reprint (on interior page) | 1 | pencils: Frank Cho; inks: Frank Cho; colors: Sabine Rich | |
| 18 | Happy Birthday, Harley Quinn! | comic story | 30 | script: Sam Humphries; pencils: Sami Basri, Nicola Scott, Emanuela Lupacchino, Ramon Villalobos, Ngozi Ukazu, Joe Quinones; inks: Sami Basri, Nicola Scott, Ray McCarthy, Ramon Villalobos, Ngozi Ukazu, Joe Quinones; colors: Hi-Fi, Annette Kwok, Tamra Bonvillain; letters: Dave Sharpe | Harley Quinn; Bernie Beaver; Poison Ivy; Tony Delfin; Goat Boy; Red Tool; Sy Borgman; Coach [Holly Hamden]; Justice League [Batman; Wonder Woman; Superman; Aquaman; Green Lantern [Hal Jordan]]; Skate Sisters; Harlem Harley; Amanda Waller; Suicide Squad [Deadshot; Killer Croc; El Diablo; Katana; Capt |
| 19 | After the Laughter | comic story | 8 | script: Sam Humphries; pencils: Riley Rossmo; inks: Riley Rossmo; colors: Ivan Plascencia; letters: Dave Sharpe | Harley Quinn; Punchline; Joker (cameo) |
| 20 | - | cover reprint (on interior page) | 1 | pencils: J. Scott Campbell; inks: J. Scott Campbell; colors: Sabine Rich | |
| 21 | - | cover reprint (on interior page) | 1 | pencils: J. Scott Campbell; inks: J. Scott Campbell; colors: Sabine Rich | |
| 22 | - | cover reprint (on interior page) | 1 | pencils: J. Scott Campbell; inks: J. Scott Campbell; colors: Sabine Rich | |
| 23 | - | cover reprint (on interior page) | 1 | pencils: Shannon Maer; inks: Shannon Maer; colors: Shannon Maer | |
| 24 | - | cover reprint (on interior page) | 1 | pencils: Jay Anacleto; inks: Jay Anacleto; colors: Rain Beredo | |
| 25 | - | cover reprint (on interior page) | 1 | pencils: Warren Louw; inks: Warren Louw; colors: Warren Louw | |
| 26 | - | cover reprint (on interior page) | 1 | pencils: Kael Ngu; inks: Kael Ngu; colors: Kael Ngu | |
| 27 | - | cover reprint (on interior page) | 1 | pencils: Adam Hughes; inks: Adam Hughes; colors: Adam Hughes | |
| 28 | - | cover reprint (on interior page) | 1 | pencils: Ian MacDonald; inks: Ian MacDonald; colors: Ian MacDonald | |
| 29 | - | cover reprint (on interior page) | 1 | pencils: Natali Sanders; inks: Natali Sanders; colors: Natali Sanders | |
| 30 | - | cover reprint (on interior page) | 1 | pencils: Ant Lucia; inks: Ant Lucia; colors: Ant Lucia | |