- Script
- Amanda Conner (credited); Jimmy Palmiotti (credited)
- Pencils
- Chad Hardin (credited)
- Inks
- Chad Hardin (credited)
- Colors
- Alex Sinclair (credited)
- Letters
- Corey Breen (credited)
- Genre
- superhero
- Characters
- Harley Quinn; Sy Borgman; Poison Ivy; Catwoman; Power Girl; Gang of Harleys [Bolly Quinn; Harlem Harley; Carly Quinn; Harvey Quinn; Hanuquinn; Harley Queens]; Chief Harry Spoonsdale; Tony Delfin; Red Tool; Egg Fu; Mason Macabre; Madame Macabre; Brooklyn Bruisers [Summer Daze; Skye Scrapper; Bowlin' Belle; Tanya Tank]; Terra [Atlee]; Harley Sinn; Goat Boy; Zena Bendemova; Madison Berkowitz; Saldana; the Unconquerable 25
- Synopsis
- Harley's friends throw her a surprise birthday party six weeks early (so she won't suspect anything), but Madison Berkowitz has enlisted Saldana and his Unconquerable 25 to eliminate Harley, and they attack during the party.
- Reprints
- Keywords
- roller skates
- Script
- Jimmy Palmiotti (credited); Paul Dini (credited)
- Pencils
- Bret Blevins (credited)
- Inks
- J. Bone (credited)
- Colors
- Alex Sinclair (credited)
- Letters
- Corey Breen (credited)
- Genre
- superhero
- Characters
- Harley Quinn; Joker; Penguin; Carpenter [Jenna Duffy]; Walrus [Moe Blum]
- Synopsis
- Joker is angry with Harley's surprise but eventually decides he likes her new hideout and wants it for himself. Unfortunately, Harley still has to come up with a way to pay for it.
- Reprints
Story continues in Harley Quinn: Harley Loves Joker (DC, 2018 series) #1.