I am looking for a title/author of a book, the first in a series, which I read perhaps 25 years ago.
The book was about a maze/labyrinth with doors. The doors lead to other inhabitants with their own living environment(perhaps portals). There is a dark, unknown man who is the overseer/caretaker. A young woman is trapped in the labyrinth and is opening doors trying to find a way out. The inhabitants in the doors are not friendly. The young woman is afraid of the man, who seems to be trying to lead her somewhere. She keeps running from him.