Keepsake raises his own army, Hugo Strange disguises himself as Batman, and the city literally breaks apart under the threat of the state of terror installed by The Scarecrow. To restore everything in order, Gotham can count on Harley Quinn, his co-colyte Kevin, and Gardener. Bella Garten joins with the psychiatrist to find the missing room of her former girlfriend, Poison Ivy, and help save the city. And to face the Scarecrow and Keepsake, they will need all possible help. It's time to gather the Gotham Sirens. Contains US episodes:- Harley Quin #7-12