THE FOURTH ONE Some memories are better left buried. At Haneul High, strange things are happening beneath the surface of an ordinary school. Maya Adeyemi has always felt that something about her past is mAnding. But when a mysterious silver mark appears on her wrist and forgotten memories begin to return, she discovers that her life may be connected to a secret buried beneath the school. With Jun, Sora, and Min-jae by her side, Maya begins uncovering the truth about a hidden underground room, students who disappeared seven years ago, and a mysterious door with the power to manipulate memories. But the deeper they dig, the stranger things become. People remember events that never happened. Familiar faces begin to feel unfamiliar. And the line between reality and illusion grows thinner with every secret they uncover. Someone knows what happened seven years ago. Someone is hiding the truth. And one of them may not be who they think they are. As friendship is tested, trust begins to crumble, and the past threatens to destroy the present, Maya must discover the truth before she loses more than her memories. Because there were supposed to be four. So why does nobody remember the fourth one? The Fourth One is a mystery-thriller filled with suspense, school action, friendship, secrets, psychological twists, and a little romance.