Jon Hamm’s character, Monty, was hospitalized in Landman episode 8, raising questions about his health. Jon Hamm is one of the biggest names in Landman’s cast, bringing his talents to Taylor Sheridan’s latest boomtown oil industry drama. However, Monty has appeared in minimal scenes throughout the first eight episodes, primarily talking to Billy Bob Thornton’s Tommy Norris over the phone as he makes decisions from the big city. Concerns related to Monty’s health have been teased throughout the season, and they seemingly take a turn for the worst in episode 8.

https://screenrant.com/landman-season-1-episode-8-monty-heart-condition-explained/