The Mad Men episode “The Suitcase” first aired in 2010. AMC broadcast it in the United States on September 5, 2010, as the seventh episode of the show’s fourth season and the 46th episode overall.
The episode takes place largely during a single overnight period and focuses on the evolving friendship between Don Draper and Peggy Olson. Their professional partnership becomes more personal as they deal with the Muhammad Ali–Sonny Liston fight, Peggy’s relationship problems, and the death of Anna Draper, the woman who knew Don’s deepest secret.
“The Suitcase” was written by Matthew Weiner and directed by Jennifer Getzinger. Its compact setting and emotional intensity made it one of the series’ most acclaimed installments. The title refers both to the literal travel case connected to Don’s life and to the emotional baggage carried by the characters. It is sometimes misremembered as a 2009 episode because Mad Men’s third season aired that year, but it belongs to season four, which aired in 2010.