Rachel Innes is a rich lady who has been taking care of her niece and nephew since their father died. The three of them decide to rent a house in the country and although everything seems to be alright in the beginning, strange events soon begin to occur. Her niece disappears then reappears a few days later. There is a murder they are involved in. They hear strange noises. Things fall down the stairs in the middle of the night. Will Rachel solve the mysteries and how will their summer end? Find out in "The Circular Staircase".