Wikipedia reveals part of the convoluted story line: "Janet found out that her mother, Ellen Mason had become an alcoholic after her husband's death. Janet asked Ed to help get her mother into Alcoholics Anonymous, and Ken seeing the two of them together started to become pathologically and violently jealous. While Kit was going after Joe and Sara Werner, Ken started to become violent with Janet, forcing her to have sex with him so she would get pregnant, which she did. She gave birth to a daughter named Emily. After the birth of Emily, Ellen started to go to AA, and Ken started to seem more mentally stable after Janet forced Ken to see a psychiatrist). Then he truly became loving and devoted to both Janet and Emily. But one evening when Ellen had an alcoholic relapse, Ken caught Janet and Ed talking privately to each other and Ken became even more jealous and stopped going to see his psychiatrist and stopped taking his medications. Ken did not tell Janet or his partner Mike about this. A few evenings later, while he and Janet were out on a date, Ken drove the car into a tree. "
Just your typical American family.
The show started in radio in 1937 and then came to TV in 1952. Read more about it here.