You work at an insane asylum as a therapist patients are usually talkative,

you were then scheduled to talk to a psychiatric patient who was a cannibal, you wait in the room until the guards bring the patient in the room, you start by asking a simple question s He stayed silent, you then stood up and went to a corned to look at his clipboard to see facts about him, you were a confused and thought he was shy you turn around and he was behind you, staring at you silently