I like Liam Neeson. Despite some horrific choices like Clash of the Titans (2010), he more regularly turns in fun, entertaining stuff like the ridiculous A-Team (2010), Taken (2008), and so forth.
The movie starts a bit slowly with the arrival in Berlin of Dr. Martin Harris (Liam Neeson) and his wife Elizabeth Harris (January Jones). They get separated at the hotel when he realizes his briefcase is still in the taxi.
The situation is exacerbated when his wife turns out to be married to someone else and both of them claim to have no idea who he is. A professor at the conference who invited him has never met him in person.
The mystery of who he is and why his wife claims not to know him gets deeper as assassins begin seeking to kill him. Who is Martin Harris and why does nobody know who he is?
There are a couple turns that you may or may not see coming, but it is a great ride getting there.
You can tell someone hit someone, but not who did the hitting and who the grunting in pain. Cars appear from nowhere, there is no point of reference in chase scenes, and thus the action in an action movie is replaced by blank stares at other patrons and wondering who is winning the fight and how.
The slow reveal of why people do not know Smith is the story and very enjoyable at that.