Uncle Fester reads an article that claims that apparently happy marriages are dangerous, because there is sickness hidden within. Since Gomez and Morticia are so happy, Fester discusses it with Grandmama, Lurch and Thing in the play room, and they all agree to make them have a few fights for their own good. Grand Guru Drasi Dumo, Gomez' yoga master calls for Gomez' dues but Fester says he quit and Morticia thinks he's a fraud. Fester's plan backfires because Gomez enjoys being with Morticia all that time he would have spent on yoga. Fester then visits the article's author, Dr. Francois Chalon, who comes to offer advice. He's very attracted to Morticia, and Fester stirs this up to cause trouble. Dr. Chalon is the best swordsman in France, and Gomez challenges him to a duel. Fester's getting worried, but Gomez would rather be dead than lose Morticia. She wants them to cancel the duel so she seeks Cousin Itt's advice in his bedroom, but he just tells her she looks good in black. Finally, Dr. Chalon calls off the fight, declaring that their marriage is perfect just the way it is.
- When Thing votes to support Fester's plan, he is a left hand instead of his usual right.
- Dr. Livingston, Marie Antoinette and Cleopatra appear in this episode, and Zelda and the octopus are mentioned.
- Morticia tells Cousin Itt he has a good head on his shoulders, then asks if he does have shoulders, and Itt replies that he has three!
- It was remade for The New Addams Family episode with the same name.
- Hemlock Cocktails