In early times, evil spirits were thought to possess people and make them act in strange and frightening ways. By the 1800’s, the study of this hysteria led some doctors to believe one person could have separately functioning personalities. In this rare research film, a woman has different personalities who believes they are separate people. One is a male that is not comfortable in women’s clothes. Another is a small child. The affliction has been known by different names, but recognized for centuries. Today it is called multiple personality disorder.