A mysterious object in Bellatrix's vault sends Harry, Ron and Hermione spinning into the past and to a Hogwarts like none they know.
Posing as students, Harry catches the eye of the Head Boy, Tom Riddle, who is nothing like the Voldemort of the future. He's charming and sly and manipulative; both brillant and deadly.
It isn’t long before they’re tangled in a game more intricate than anything before. A game of heightened stakes, of tension, and the odds are stacked against Harry. With the threads of the future unravelling, can Harry make it out intact? And what is the cost, of truly getting close to Tom?