When the Crone (in the guise of Terry Warbell) parks her car in the street outside the Stephens' house, it is obvious that there is a tree-lined park or garden on the opposite side of the street on the site where the Kravitz house was supposed to be located in previous episodes of the series.
When Darrin meets Terry and is surprised, he says "I thought your folks lived in Larchmont." She replies that they do, but since she was going to be working with McMann & Tate, she "got an apartment not far from here." This shouldn't make any sense to Darrin. He should know that Larchmont is about thirty miles closer to New York City. Westport is at least twice the distance.