Et Tu is a 2023 American independent comedy horror-thriller film written and directed by Max Tzannes in his feature directorial debut. Starring Lou Diamond Phillips and Malcolm McDowell and filmed during the COVID-19 pandemic, it is set around a regional theater production of William Shakespeare's Julius Caesar and follows the show's director as he is driven into madness. The film premiered at the Heartland International Film Festival on October 5, 2023 and was released in the United States on July 25, 2025 in theaters and on digital by Buffalo 8. It received mixed-to-positive reviews from critics.