S6E3 · The Collaborators

Complete story — includes the ending

Pete and Trudy host a dinner party for their neighbors in Cos Cob. Pete flirts with his neighbor's wife, Brenda, and they meet for a tryst in his Manhattan apartment. Trudy realizes the affair when Brenda returns to the Campbell home, having been beaten by her husband; Trudy lambasts Pete for being indiscreet and kicks him out of their home. Meanwhile, Megan confides to Sylvia about her recent miscarriage and admits it to Don, prompting an awkward conversation about whether they want to have children. Raymond, representing Heinz Baked Beans, brings a Heinz Ketchup representative in for a meeting with SCDP, but makes it clear that he does not want SCDP to work with Heinz Ketchup. Nevertheless, SCDP decides to prepare a pitch for Heinz Ketchup, and Stan lets the news slip to Peggy, who shares it with Ted. Ted later decides that CGC should try to poach Heinz Ketchup, making Peggy feel guilty. Don and Joan are uncomfortable when Herb returns to the SCDP office, and Don purposely sabotages SCDP's meeting with Jaguar, enraging Pete. Don returns home and has flashbacks to his adolescence growing up in a brothel with his stepmother.