Anne Frank writes in her diary, initially intended as a private record of her thoughts and experiences. As the situation in hiding deteriorates, she begins to edit and refine her writing, with the intention of possibly publishing it after the war.

After the arrest of the inhabitants of the Secret Annex, Miep Gies and Bep Voskuijl find Anne's diary and other papers scattered on the floor. They keep them hidden, hoping to return them to Anne after the war.

After learning of Anne's death, Miep Gies gives the diary to Otto Frank, the sole surviving member of the family. He initially hesitates to read it, but eventually begins to transcribe and translate sections.

The diary is first published in Dutch under the title 'Het Achterhuis' ('The Secret Annex'). It receives positive reviews but does not immediately achieve widespread fame.

The first English translation of the diary is published under the title 'The Diary of a Young Girl.' It quickly gains popularity in the United States and the United Kingdom.

The diary is published in German, Anne's native language, under the title 'Das Tagebuch der Anne Frank.' This publication is particularly significant in Germany, where it sparks reflection on the Holocaust and its impact on German society.

A stage play based on the diary, written by Frances Goodrich and Albert Hackett, premieres on Broadway. It wins the Pulitzer Prize for Drama and the Tony Award for Best Play, further increasing the diary's visibility.

A film adaptation of the play, directed by George Stevens, is released. It wins three Academy Awards, including Best Supporting Actress, and introduces Anne Frank's story to an even wider audience.

Anne Frank's diary remains one of the most widely read books in the world, translated into over 70 languages. It continues to be taught in schools, adapted for various media, and serves as a powerful reminder of the Holocaust and the importance of tolerance and understanding. The Anne Frank House in Amsterdam is a major museum visited by millions each year.