I’ve read all of Moriarty’s books - each one very different and each one hitting me differently. This one jumped out at me quickly because it led with a woman, seemingly possessed by something, begins to tell passengers on her flight at what age and how they will die. 

43 - workplace accident
31 - assault
98 - old age 
7 - drowning 

The passengers all leave the flight a bit shaken but resume their lives with only a small bit of worry that something might happen. Until the predictions begin to come true…

Who is this woman? And how does she know so much about these people and when they will die?