A Sister's Betrayal 
Gotham City Sirens #25 is an issue of the series Gotham City Sirens (Volume 1) with a cover date of September, 2011.
Synopsis for "Friends" Part Three
An unknown benefactor has offered Poison Ivy a deal to kill Catwoman. The catch? She has to break out of Arkham Asylum first!
Appearing in "Friends" Part Three
Featured Characters:
- Poison Ivy (Flashback and main story)
- Harley Quinn (Flashback and main story)
- Catwoman
Supporting Characters:
Villains:
- Clayface (Cameo)
- Mad Hatter (Cameo)
- Penguin
Locations:
See Also