*possible spoilers* Lets see if I am right....
Hey Folks,
I am about 'half-way' through the movie now and I think the killer is the guy who is (sorry, Can't find his reel or real name quick) the guy who is the police guy inside the glass chamber when Anna tries to go through the 'face parade' at the PS.... lets see if I am right with 25 mins still left... Honest!
My vote history : http://www.imdb.com/mymovies/list?l=26712582