Mad Men Season 3 Episode 5 : The Fog
In the wake of the death of Betty's father, Sally begins to misbehave, much to Betty and Don's dismay. Her teacher reports she is troubled by the death of Medgar Evers, which is all over the news. Looks between Don and the teacher reveal stirrings of attraction. Pete tries to work a new angle into his business dealings, and an odd dream has a strange effect on Betty, who gives birth to a baby boy she names Eugene in honor of her father.