Gotham City Sirens (Volume 1) with a cover date of August, 2010. It was published on June 30, 2010.
Synopsis for "Sister Zero, Part 2 of 2"
Catwoman and Harley Quinn try to fight an empowered Maggie Kyle, but they can't do much : Harley Quinn ends up being controlled and Catwoman wounded. Alone, Catwoman hides inside the church. As her sister follows her inside, Catwoman admits what really happened years ago.
Appearing in "Sister Zero, Part 2 of 2"
Featured Characters:
- Catwoman (Flashback and main story)
- Harley Quinn
Antagonists:
- Maggie Kyle (Flashback and main story)
- Angel
Other Characters:
- Black Mask (Dies in flashback)
- Simon Burton (Dies in flashback)
- Bane (As an illusion only)
- Clayface (As an illusion only)
- Joker (As an illusion only)
- Killer Croc (As an illusion only)
- Mad Hatter (As an illusion only)
- Man-Bat (As an illusion only)
- Mister Freeze (As an illusion only)
- Poison Ivy (As an illusion only)
- Riddler (As an illusion only)
- Scarecrow (As an illusion only)
- Scarface (As an illusion only)
- Two-Face (As an illusion only)
Locations:
- Gotham City
- Divinity Church
Items:
- Black Lantern Ring
- Harley's Mallet
- Skull of St. Bertram