On her last day of school, eighteen-year-old Matilda Clarke is unexpectedly thrust into an alternate reality. At first glance, this world looks identical to hers.

 

Same streets. Same house. Same sky.

 

The people she loves even have the same faces, the same voices—but here, they’ve lived different lives. To them, she is a stranger. A traveller.

 

In this reality, interdimensional travel is no longer fiction, and travellers are highly coveted by a powerful and dangerous tech conglomerate.

 

To escape, she must stay invisible in a world that watches everything.

 

But the closer she gets, the more the truth begins to fracture—about this world, and the one she came from. And leaving might cost more than she is willing to lose.