Bewitched - Season 1 - Eps 11: It Takes One to Know One
When Darrin begins searching for a beautiful model to play "Miss Jasmine", Endora sees it as an opportunity to break up her daughter's marriage and sends a gorgeous witch to seduce him. Samantha recognises model Janine Fleur as Sarah Baker the witch. Sarah is determined to fulfil what she set out to do, namely seduce Darrin despite Endora calling off the contract. Samantha, who still has faith in her husband, just wants her battle with Sarah to be on an even playing field.
About Bewitched

Title: Bewitched
First Air Date: 1964-09-17
Last Air Date: 1972-03-25
Status: Ended
Rating: 7.861/10 (from 695 votes)
Language: EN
Seasons: 8
Total Episodes: 254
Network: ABC
Genres: Sci-Fi & Fantasy, Comedy, Family, Drama
Production Companies: Columbia Pictures Television, Screen Gems
Synopsis
Samantha Stephens is a seemingly normal suburban housewife who also happens to be a genuine witch, with all the requisite magical powers. Her husband Darrin insists that Samantha keep her witchcraft under wraps, but situations invariably require her to indulge her powers while keeping her bothersome mother Endora at bay.
Cast

Elizabeth Montgomery
Samantha Stephens

Dick Sargent
Darrin Stephens

Agnes Moorehead
Endora

David White
Larry Tate