I was able to sit down tonight while the wife was away at a housewarming party and watch "The Whisperer in Darkness".
I really enjoyed their previous movie, The Call of Cthulhu and I enjoyed this one as well! I thought it moved a bit slowly at times and I don't remember their being a little girl that needs to be rescued or aerial battles...but I still enjoyed it.
The movie manages to provide a great atmosphere. The part where he's listening outside the window of the house was great! I also liked the brain case machine - the visuals were excellent. I know that the machine didn't project their faces in the story, but I realize that they have to make changes when making a more visual movie.
All in all I enjoyed this movie. It makes me want to go back and re-read the story once again.