When does Monster High return?

The series follows Frankie Stein, Draculaura, and Clawdeen Wolf, the respective children of Frankenstein's monster, Count Dracula and a Werewolf, as well as other children of famous mythical monsters as they navigate the hilarity of high school in the hallowed halls of the eponymous Monster High.
The series follows Frankie Stein, Draculaura, and Clawdeen Wolf, the respective children of Frankenstein, Dracula and a Werewolf.