I agree with a lot of of the reviews I've read which say there was the potential for a really good movie in here somewhere but it just didn't quite come off. As far as I can figure out, the main problem is that the final movie deviated in crucial ways from the script and was butchered in the editing room to try and cover up the 3rd act twist and the reveal of the identity of Little Anne's abductors.
From the confusing opening onwards, it feels as if huge chunks of vital exposition have been left on the cutting room floor. Many scenes appear to have been shifted around from script to screen. For example, the scene in which Rhino and Eugene are driving in the van with Little Anne and Rhino attacks Eugene : in the original script, that was the first scene in the movie.
Also, did anyone else notice that when Mike and Brian interview the two teenage girls at the shelter, Brian seems to already have the bruises on his face which he doesnt actually receive until a later scene during the chase when the runaway rapist hits him with a shovel? Further evidence of the structural tampering which went on with this movie in the editing room.
I suspect that Ami and her editors bent the story out of shape to try and delay the reveal of the third act twist as long as possible to the audience. A big mistake, since the twist was glaringly obvious to begin with, even in the original script, and didn't need to be the focus of the story.
I can think of a few good examples of thrillers where a minor background character is revealed to be the killer in a way which doesn't feel laboured (Michael Rooker in Sea of Love springs to mind). Unfortunately Texas Killing Fields just couldn't pull it off.
A well-intentioned debut Ami, but you shot yourself in the foot with confusing editing on multiple occasions. I can't believe that your dad - the great Michael Mann, who produced this movie - didn't step in and make some sense of it. Back to film school for you :/