My wife and I watched this movie at home on DVD from our public library. It is the right length, just over 90 minutes, and kept our interest the whole.
Yet this is a throw-away movie, the story is highly contrived to create suspense. For example he is told to look for a passenger "who doesn't belong" yet the people manipulating him know exactly who the passenger is.
My other issue with it are the fights, hand-to-hand combat in a moving train, they are shown to hit each other so hard, sometimes with devices (guitar!) that would kill them yet they recover very quickly. It definitely subtracts from the believability.
Yet overall I found it suitable entertainment because I like Liam Neeson, he is perfect for this type of role. He is Michael MacCauley, an insurance salesman, who commutes by train along the Hudson River and into NYC each day. After 10 years he pretty well knows all the usual commuters. But this day he is laid off, he has two mortgages, his son is about to start college, so when he is tempted with $100,000 cash to perform a task it gives him the motive to accept it. As a former cop he has the investigative instincts.
The DVD extras are interesting, except for brief NYC scenes the whole movie was shot on sets at Pinewood Studios in England. They say 90% of the actors are British but I didn't try to verify that number.
