Michael Myers is a fictional character who stars in the Halloween series of slasher movies. He was institutionalized at the age of 6 after stabbing his older sister, Judith, to death. He claimed that a voice in his head told him to hurt people. His psychiatrist, Dr. Sam Loomis, said, “Michael Myers is the most dangerous patient I have ever observed. He’s covering up. The catatonia is a conscious act.” He eventually escapes from the sanitarium and stalks teenagers, including his sister, Laurie. His symptoms are more consistent with schizophrenia or psychopathy than autism.