My Dark Vanessa meets Gone Girl in this provocative, twisty debut thriller from a stylish new voice.

Steven Harding is a handsome, well-respected professor.
Ellie Matthews is a wide-eyed young college student.

Together, they are driving north from New York, for their first holiday together: three days in an isolated cabin, far from the city. Ahead of them, the promise of long, dark nights - and the chance to explore one another's bodies properly, away from prying eyes.

It should be a perfect, romantic trip for two.

Except that he's not who he says he is.

But then again, neither is she...