Good actions and great mystery

Rating: 8/10 (6 August 2017)

One day, Bill Marks who is a federal air marshal officer received email on the flight and it says if he doesn't meet the sender's request, one of the passengers will die after 20min, so he try to find the sender.
This film conceals the sender from audiences very well. Most of scenes are showed at Bill's view so I didn't expect who is the sender until last scene. Moreover, many times finding suspects effectively confused me. What I surprised most is Bill is being made out to be a terrorist by sender's plan naturally. At that scene, I thought the sender (the screenwriter of this film, actually) is truly genius. A flight, a security officer, and death, the story seems very common from these words, but this film is really great.
In addition, action scene is also good. Liam Neeson acted Bill very cool. Action scenes are not many in this film, but I think enough to fascinate audiences because that flight situation was used very well.
Thus, by concealing the sender and cool action, I enjoyed this film without any moments of boring.