When does Harley Quinn return?

Harley Quinn is an American adult animated black comedy superhero television series. The series follows the adventures of Harley Quinn and her best friend and partner Poison Ivy after leaving her boyfriend, the Joker. The show premiered on November 29, 2019. The first and second seasons premiered on DC Universe, before moving to HBO Max for its third season.
The series follows the adventures of Harley Quinn and her journey of self-discovery after breaking up with the Joker. Harley intends to make a name for herself in Gotham City's criminal underworld. The main storyline revolves around the relationship between Harley and Ivy. They form a new crime-fighting team called the Gotham City Sirens.