Endora is outraged when Samantha will not go with her to a Halloween celebration.
A detective one of Darrin's client's employees hires discovers that Samantha is a witch.
Darrin thinks that Larry Tate has been turned into a teddy bear by Endora.
A private detective tries to blackmail Samantha when he discovers she is a witch.
Endora's attempt at being the perfect sweet and charming mother-in-law causes a split between Darrin and Larry.