In the Mad Men episode " Six Month Leave " (S2E09), Freddy Rumsen's career ends after a humiliating drunken incident, prompting Peggy to fill his role and Don to spiral further, while Betty struggles with the fallout of her marriage, all against the backdrop of Marilyn Monroe's death.
You can watch this episode with English subtitles on streaming platforms like AMC+ and Prime Video. "Mad Men" Six Month Leave (TV Episode 2008) - IMDb Mad Men subtitles English S02E09