Sally Farnum and her husband Alex inherit an old mansion from Sally's recently deceased grandmother. Shortly after moving in, she discovers a bricked-up fireplace in the basement den. The estate's handyman, Mr. Harris, tells her that Sally's grandmother had him seal it up after her grandfather died and that it is better to leave it the way it is. After he leaves for the day, she uses some of Harris' tools to try to remove the bricks herself. She fails, but is able to pry open a small side door used for removing fireplace ashes. Inside is not a fireplace at all but a large, dark, deep sub-basement. As Sally leaves the den, several whispering voices call her name from behind the fireplace, proclaiming that "She set us free."