After looking through the trailer, I was psyched to watch this. The plot, story, and actors all gave me the impression of a Bourne-type movie with a twist.
However, I came away watching it feeling it could have been so much more. Overall, the story was fantastic. The loss of identity, then the search, then the shocking revelation, etc. To some extents, it was even better than the Bourne trilogy in terms of the twists and unexpected findings. The major drawback, however, was the lack of energy on the actor's parts. I felt Neeson's role was somewhat confined (maybe due to the PG-13 rating), and his lack of energy and acting quality kind of left the supporting actors in a bad light as well.
With that said, I personally felt that the directors should not have cast Neeson as the main actor. He looked honestly uncomfortable throughout, or maybe it's just a terrible movie...
Great story, but it could have be better done, and as a result, been so much more.