I was personally very excited for this episode, cause while I enjoyed last weeks, I thought it was a little unrealistic. The previews for this weeks episode seemed to play more on the psychological, but it was a disappointment.
There was a lot of things I didn't understand about this episode, such as the four characters on the wall. Maybe I missed the explanation, but that confused me. I also felt like it took too long to get into the whole plot. The beginning was a great start, and then it was kind of dull until about half way through. I will keep watching each week and hopefully it won't disappoint.