Heart of the Serpent

Lyra Black was raised by her godmother, Andromeda Tonks, after the First Wizarding War killed her mother, Marlene McKinnon, and incarcerated her father, Sirius Black. When Sirius escapes Azkaban, Lyra is forced to face the reality that has been hidden from her. Her once serene, happy family life gets thrown on its head, and she finds an unlikely ally in the boy-who-lived.