Edward Mallory

The queen of the fashion world is poisoned on the eve of an important spring showing.

Grandpa finds an ancient book of recipes ...including one for the "Love Potion". He mixes up a batch and the next morning he secretly spikes Marilyn's oatmeal, who is running late for work and leaves without breakfast. Lily empties her breakfast back in the pot and serves it to the rest of the family. Afterwards Lily and Herman find themselves the unwelcome targets of amorous advances made by their nosy neighbors.

Darrin finds Samantha addressing a group of neighbors, including Abner and Gladys Kravitz, on behalf of Ed Wright's candidacy for councilman. Listening to Wright denouncing the incumbent, John C. Cavanaugh, for dipping into city funds, Darrin takes up Wright's cause. At Darrin's suggestion, Wright challenges Cavanaugh to a television debate on all issues, particularly the new drainage project. Before the debate, the government orders an investigation of the project. However, during the debate, Mr. Sedgwick of the governor's staff praises the project. While Darrin berates Samantha for dragging him into politics, a water main bursts. Although Wright's victory is assured, Darrin holds Samantha responsible for the flood. However, Endora tells Darrin she caused the flood to stop Darrin from blaming Samantha for involving him in politics. When Darrin says he'd give anything to have Cavanaugh in the palm of his hand, Endora obliges him.

When the Munster family goes to the ocean for a picnic, Herman decides to try out his diving equipment. The rest of the family is too busy with preparations for their to hear a news report that a Russian finishing vessel is anchored off the beach and that it is believed that it has been sent to spy on coastal defenses. Lily and Grandpa worry when Herman does not return for lunch.

J.R.'s determination to discover how Cliff is getting information about Ewing Oil's operations pays off when Sly falls into his trap. When J.R. confronts his secretary, she tells him how Cliff coerced her into working for him and he decides to use her to mislead Cliff. Meanwhile, Peter is upset when Lucy brings John Ross to camp instead of Sue Ellen. Katherine looks into Jenna's past to discredit her with Bobby.