The mystery begins

Alaric

In the two years since his mother died in a terrible train crash, Alaric's life has unraveled. He and his father are barely on speaking terms, and Withern Rise, their Victorian mansion, is in shambles. Alone at home during a blizzard, Alaric stumbles into a parallel world; a reality in which his mother is still alive. There's only one problem. Someone else is living his life — a girl called . . .

Naia

Naia tries not to dwell on the accident that nearly took her mother two years ago. Now that life with her parents at Withern Rise has returned to normal, she thinks the worst is behind her. But during a snowstorm she's confronted, in her own home, by a stranger. Why does this boy look so much like her? Who is he? And why does he think this is his house?

Alaric's and Naia's discovery of each other sets off an electrifying chain of events. As their lives — and lifelines — entwine, the two teenagers uncover a truth that has the power to rearrange, or even erase, their very existence.

A Boy

Alaric's life has unraveled in the two years since he lost his mother in a terrible train crash. He and his father are barely speaking, and their home, Withern Rise, is in shambles.

A Girl

Naia tries not to dwell on the accident that nearly killed her mother two years ago, now that life with her parents at Withern Rise has returned to normal.

One and the Same

Alaric and Naia do not know each other, or that they are living nearly identical lives. But when they meet, their resemblance to each other is unmistakable. As their lives entwine, they uncover a truth that has the power to rearrange, or even erase, their very existence.