It’s one of those books where the “mysterious events of the past” are mysterious only because the narrator isn’t telling you about it.
Leonora, 26 years old is a crime author and lives a solitary and lonely life. Then, she receives an email from a woman she does not know, inviting her to a “hen party” for a friend she has not spoken to for a long time. But she goes. This hen party is for the wedding of Leonora’s childhood friend Clare. A wedding which she was not invited to. It’s held in a modern glass house in the middle on the woods with four other of the bride-to-be’s friends. Of course, there are mysterious happenings, secrets unravelled, and maybe a little murder? Okay, you know there’s a murder since the book opens in the present time then Leonora is in the hospital with injuries and the police have told her that somebody has died. But she does not remember what happened. So it goes back and forth between the present time and flashbacks to the hen party events.