"Mr. Schmidt, recently arrived in a small Bavarian village which lies eight miles northwest of Munich, a picturesque, delightful little spot onetime known for its scenery but more recently related to other events having to do with some of the less positive pursuits of man: human slaughter, torture, misery and anguish. Mr. Schmidt, as we will soon perceive, has a vested interest in the ruins of a concentration camp - for once, some seventeen years ago, his name was Gunther Lutze. He held the rank of a captain in the S.S. He was a black-uniformed, strutting animal whose function in life was to give pain, and like his colleagues of the time he shared the one affliction most common amongst that breed known as nazis: he walked the Earth without a heart. And now former S.S. Captain Lutze will revisit his old haunts, satisfied perhaps that all that is awaiting him in the ruins on the hill is an element of nostalgia. What he does not know, of course, is that a place like Dachau cannot exist only in Bavaria. By its nature, by its very nature, it must be one of the populated areas of the Twilight Zone."
Walking in the old concentration camp, Lutze meets Becker, whom he mistakes for a caretaker. Becker is actually a ghost, and he and the other ghostly inhabitants of the camp have returned to put Lutze on trial. After a trial, Lutze is made to suffer like his victims from years ago. The torture drives him insane. A doctor later wonders what drove Lutze crazy. He then looks around the camp and says, "Dachau, why do we keep it standing?""There is an answer to the doctor's question. All the Dachaus must remain standing. The Dachaus, the Belsens, the Buchenwalds, the Auschwitzes - all of them. They must remain standing because they are a monument to a moment in time when some men decided to turn the Earth into a graveyard. Into it they shoveled all their reason, their logic, their knowledge, but worst of all, their conscience. And the moment we forget this, the moment we cease to be haunted by its remembrance, then we become the gravediggers. Something to dwell on and remember, not only in the Twilight Zone but wherever men walk God's Earth."