TransSiberian

I didn't like it. Nope. It should be a thriller, but honestly it wasn't clear what kind of a character was Jessie, what side I was supposed to take.
I'll explain. Jessie (Emily Mortimer) and her husband Roy (Woody Harrelson) meet couple Carlos (Eduardo Noriega) and Abby (Kate Mara) on the trans-siberian express train. Carlos, Jessie and Abby stop at the same station while Roy stays behind. One morning, Jessie is quite happy to go on a trip alone with Carlos; she's a bit strange, it looks like she finds her husband boring and Carlos exciting and attractive, like she envy his relationship with Abby. She goes with him without telling Abby, to a remote and isolated church, she takes pictures of it and of Carlos, they kiss each other, then she pulls back and he insists. She runs away and he follows her, shouting that she misunderstood him, that he never meant to hurt her of force her. He's behind her, she can't outrun him, so she kills him, and before dying he tells her he wouldn't have hurt her.
The thing was too ambiguous, it wasn't clear what was right or wrong. Was he really a rapist, or had she reacted too much, to the point of killing him? Honestly, watching it she looked more like a murderer than like a victim that defended herself. I didn't think "how do you like that, scumbag?". I just thought : Oh God, she murdered him!
Then she goes back saying nothing to anyone, leaving Abby alone. She pretends to not know anything about Carlos whereabouts, and she meets up again with Roy. They leave again on the trans-siberian train, and they meet Grinko, a Russian detective who asks them a lot of questions about Carlos, telling them he was actually a drug smuggler. Jessie at this point finds out that Carlos had filled her case with matrioskes full of drugs. She tries to get rid of them, but she can't because Gringo is very suspicious and always around. Obviously Jessie tells lots of lies, both to him and her husband who knows nothing of what she did.
Now, the problem is that he really seemed to be in the right, and that she was in the wrong, and it was even annoying that she appeared to get away with it, with murder. Later in the movie though I found out that Grinko was actually a dirty cop, and that he was looking for Carlos because of the drug, to retrieve it for some bad guy he was working for. I saw the way he was torturing poor Abby who really knew nothing about it, and our two heroes can't do anything for her, so they escape leaving her there to suffer.
Another thing that annoyed me was how at the end the police kept remarking what a bad character Carlos was, what a criminal, because by doing so they were legitimating Jessie's actions, enabling her to come out of this story pure and clean. Well, dear Jessie, you're not. I don't like you, never did and never will.
Apparently Kolzak was played by Thomas Kretschmann, but once again I did not recognize him! Incredible how I never recognize him when he plays a different character.