Complete story — includes the ending
Lane informs Pete that Ken will be made Head of Accounts, leaving Pete to ponder his future at Sterling Cooper. Roger's daughter, Margaret, complains to Mona about Jane giving her marital advice and demands that Jane not attend the wedding, leading Roger to reprimand Jane for upsetting Margaret. News of John F. Kennedy's assassination reaches Sterling Cooper, and the employees gather around the television in Harry's office to watch the news. Margaret is devastated that her upcoming wedding will be ruined by the news, while Pete, already despondent over Ken being promoted over him, resolves to stay at home and watch the news on TV with Trudy. Betty is heartbroken by the news and, while everyone else shows sorrow, grief, and fear for the future, Don remains composed. Don convinces Betty to go to Margaret's wedding, which is sparsely attended; Don assures Betty that everything will be fine, but she seems unconvinced. Following the subsequent live-on-television shooting of Oswald by Jack Ruby, Betty is distraught and leaves the house to meet Henry, who proposes that they get married. Betty returns home and informs Don that she no longer loves him.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Mad Men season 3. HTML formatting and reference markers removed. · Content license