What is the fine-grained topic of the following text: Years of treatment at a mental institution for the criminally insane, Norman Bates still can’t quite elude the demands of “Mother.” Vera Miles also returns as the inquisitive woman who is haunted by her sister’s brutal murder and the ominous motel where it all occurred. Only return the topic.
Norman Bates' struggle with mental illness and Vera Miles' investigation into her sister's murder at a motel.