Just One night is enough to change everything Hermione knows.

There's been a rash of killings around wizarding Britain the victims: Pureblood Wizards. Follow Hermione as she uncovers some of the dark secrets locked in that community.

What if when Emma, Mary Margret, and Regina where leaving they found a girl tied to the regret tree. Who is she? What does she have to hide? And Why was she there in the first place? This is my first crossover would love some feedback. Harry Potter/Once Upon A Time.