My second book by this author and I enjoyed it as much as the first. 
 A twisty, thriller-mystery that keeps you guessing. Very enjoyable. 
 Nora is a 26 year old writer happily living alone in London when one day, out of the blue, she receives an invite to Clare's hens party. Clare, her best friend from school who she hasn't seen, spoken to or heard from in ten whole years. Not since something happened that resulted in Nora breaking up with her first love James and walking out of school and away from everyone/thing she knew for ever.... or until now. 
 Why has she been invited? And why does everything at the party, including Clare herself, seem so... weird? And why does she have such a bad feeling about this... 
 Opens big with Nora running frantically through the woods and is told from two different time periods from then on; One taking place in the past, showing the events of the hens party, and one taking place in the present - with Nora in the hospital, a cop outside her door, trying desperately to remember what happened.