Harry Potter and the Half-Blood Prince (2009)

As Voldemort’s influence spreads, Hogwarts becomes a battleground of fear and loyalty. In his sixth year, Harry finds a mysterious potions book belonging to the “Half-Blood Prince” that aids him in his studies and provides insights into dark magic. With Dumbledore’s guidance, he delves into Voldemort’s past, learning about Horcruxes, objects containing fragments of Voldemort’s soul. As Harry uncovers these dark secrets, he is forced to make sacrifices, culminating in a heartbreaking loss that leaves Hogwarts and the wizarding world in peril.