At twenty-three, Alice Hare arrives in New York looking for a place to call home. Instead she finds Mizuko Himura, an intriguing Japanese writer, who she begins to follow online.

Fixated from afar and increasingly convinced this stranger's life holds a mirror to her own. But as Alice closes in on her 'internet twin', fictional and real lives begin to blur, leaving a tangle of lies, blood ties and sexual encounters that cannot be erased.