Bill Marks (Liam Neeson) is a highly skilled federal air marshal, traveling on a transatlantic flight from New York to London but at the same time he’s struggling to overcome his daughter’s tragic death – turning to drink as a result. While on duty, he receives a series of text messages from an apparent fellow passenger, demanding 150 million dollars to be transferred into an offshore bank account. If this isn’t done, the perpetrator promises to kill a fellow passengers every 20 minutes for the duration of the flight. A surprisingly entertaining movie that keeps you entertained and guessing from start to finish.