We thought the movie was slow and not clear. Matt Damon mumbled a little and I had trouble understanding him, as well as the other actors with their French accent.
I never understood why Allison wanted Lina out of the apartment and paid Akim with a necklace to do it. Then he misunderstood and instead killed Lina.
If I have to read the reviews to understand a movie, then it was not well written. What was the motive? What did Lina do to deserve this? Perhaps some flashbacks would have helped.