"Jennifer, Hecate, Macbeth, William McKinley, and Me, Elizabeth" is a novel by E.L. Konigsburg that explores themes of friendship, identity, and the impact of history on personal lives. The story follows Elizabeth, a young girl who navigates her relationships with her friends, including Jennifer and Hecate, while also reflecting on the historical figure William McKinley, the 25th President of the United States. The narrative intertwines elements of Shakespeare's Macbeth, particularly the themes of ambition and fate, with Elizabeth's own journey of self-discovery. Through her experiences, the novel highlights the connections between personal and historical narratives, encouraging readers to consider how the past shapes their present.