Flight 171 is a quick-paced thriller that takes place during a 4-hour plane ride with a group of high school students and a sinister, unearthly beast. Devon is still grieving the loss of her sister and trying to uncover who killed her when her senior class boards a plane to Denver for a ski trip. Shortly into the trip, a supernatural terror takes over the plane and gives the high schoolers an ultimatum - choose one person in their group to sacrifice before the end of the flight or the plane will crash, killing everyone. 

I did rate this book based on my reading experience, however, though this thriller wasn't my favorite due to the semi-shallow plotlines, I feel confident in saying that teen readers will eat this book up. It has all the elements of an edge-of-your-seat thriller with a mystery that keeps you wondering almost to the end.