Sieben Mulden und eine Leiche (2007)

Thomas Haemmerli is about to celebrate his fortieth birthday when he learns of his mother's death. A further shock follows when he and his brother Erik discover her apartment, which is filthy and full to bursting with junk. It takes the brothers an entire month to clean out the place. Among the chaos, they find films going back to the 1930s, photos and other memorabilia.

Unfortunately the movie Sieben Mulden und eine Leiche is not yet available on HBO Max.