Instruct: Classify the given review into positive or negative sentiment.
Query: Must-see Twilight Zone Episode

I have to admit that I have seen this episode before when they run it TV, but I wanted to watch it one time without all the commercials. It is a very deep and chilling episode that takes place in a deserted German concentration camp, where a man who had tortured and killed people decided to revisit it. He is met there by a ghost of a person who was killed there, as well as seeing images in his mind. Although the man goes to the camp in his right mind, he leaves it as being totally insane.