SPOILER ALERT: The following reveals major plot points from HBO’s The Gilded Age’s Season 4 premiere. Surprise! The Gilded Age kicked off its fourth season with multiple surprises, including the quiet appearances of Matt Damon and David Letterman.
Source: [Deadline](https://deadline.com/2026/11/matt-damon-david-letterman-cast-the-gilded-age-season-4-1237211033/)