Her sister Kate is murdered in an apparently random attack in Paris and the police seems to be stuck in their investigations.

Julia decides to inquire into the murder on her own and finds out that her sister was using online sites to meet up with strangers in order play out her sexual fantasies.

[2] Mark Lawson, writing for The Guardian, similarly gave it a mixed review, describing it as a disappointing follow up to Watson's first book, Before I Go to Sleep.

[3] In a review for The Observer, Alison Flood was more positive, stating that there were a number of things that Watson did extremely well.

[4] The film rights for the novel were acquired in May 2015 by Reese Witherspoon's production company, Pacific Standard.