after her fifteenth birthday, Anne Frank recorded her feelings, her emotions, and her thoughts, as well as the events that happened to her, in the diary which her father had given her as a birthday present. Together with her parents and her sister, Margot, the Van Daan family (consisting of a husband, a wife, and a son, Peter, two years older than Anne) and, later on, an elderly dentist named Mr. Düssel, Anne lived in a set of rooms at the top of an old warehouse in Amsterdam, Holland, concealed behind a hidden door and a bookcase. During the day, when people worked in the office and in the warehouse below, Anne and the others had to keep very quiet, but at night they could move around more freely, though of course they could not turn on any lights nor show in any way that the house was inhabited