It does and it was.

See, I don't think the ending was a sequel hook. What haunted me most about the film after we'd finished running down the list of our favorite thrills was how awful it is that she got everything she needed and now has to go live her life, knowing full well that the man who killed her friends is a hero in the eyes of…

David Klann is the guy at the party Rosamund Pike was referring to when she told Ben Affleck, "I prefer men who are funny, not 'funny.'"

Now this is one underrated comment right here

I want to upvote this, but I don't upvote your "first"-thirty ass on silly, petty principle. Consider this a begrudging clap on the back.