Harry Potter and the Half-Blood Prince by J.K. Rowling

In a year marked by dark revelations, Harry discovers an old textbook filled with mysterious notes from the enigmatic "Half-Blood Prince." As Dumbledore shows him memories that unlock Voldemort's past, Harry prepares for the final confrontation. Amid romantic tensions and deepening friendships, danger creeps closer to Hogwarts than ever before. This sixth book is both intimate and suspenseful, with shocking twists that change everything. Rowling masterfully sets the stage for the series’ epic conclusion.