Liam Neeson stars as troubled air marshal Bill Marks, who is enroute to London. He starts receiving text messages saying someone onboard will be killed every 20 minutes unless $150M is sent to a secret bank account. And then people start dying.
In this movie, every character, except for Bill, is set up as a likely suspect; they all look very shifty and fully capable of murder. It's fun to watch everyone look guilty and my mind was racing to figure out the culprit (I couldn't.). Neeson is outstanding as the air marshal, running the gamut of emotions from grief to confusion to terror; he's instantly sympathetic and likable. Julianne Moore is good as Bill's seatmate and it's fun to see Michelle Dockery ("Downton Abbey") as a flight attendant.
From the opening moments, I felt uneasy; that quickly turned to paranoia and then fear. The story kept me on the edge of my seat the whole time and I really enjoyed the mystery of it. Recommended for those who like whodunits.