Anne Frank (12 June 1929 – February 1945) was a German-born Jewish girl who, along with her family and four other people, hid in the second and third floor rooms at the back of her father's Amsterdam company during the Nazi occupation of the Netherlands. Helped by several trusted employees of the company, the group of eight survived in the achterhuis (literally "back-house", usually translated as "secret annex") for more than two years before they were betrayed, and arrested. Anne kept a diary from 12 June 1942 until 1 August 1944, three days before the residents of the annex were arrested. Anne mentioned several times in her writings that her sister Margot Frank also kept a diary, but no trace of Margot's diary was ever found.