This genre-bending YA novel follows a boy who finds a century-old diary written by a young woman in Nagasaki, Japan—and becomes haunted by her vengeful spirit.

When Japanese-American teenager, Adam, discovers a diary in his attic, he is enthralled by its account of a young woman's life in Nagasaki. A hundred years separate them, yet she, like Adam, is caught between cultures, relationships, and heartbreak.

She also writes of the ghosts that have begun to seek her out, which Adam dismisses as fantasy—until he begins to be haunted by her terrifying spirit. Unravelling the mystery of her identity—and the wrong done to her—seems to be the only way to save himself.

With the help of his new crush on a summer trip to Nagasaki, the two boys race against time to untangle a story that has rippled through generations…