Sam chooses Naomi Hogan (Alice Ghostley), a well-meaning but incredibly clumsy woman who desperately needs to pay for her son's medical schooling.
Samantha tells Darrin that they are invited over to the Kravitz's to watch Gladys' brother Louis Gruber (Jack Weston) play violin on TV.
As Aunt Clara tries to remember the incantation to get them back, the others get caught up in celebrating the first Thanksgiving with the likes of Miles Standish and John Alden (Richard Bull).
Larry tells Sam she can't back out as they're also entertaining existing client Edgar Baker (J. Edward McKinley) and his wife Agnes (Sara Seegar).
His courteousness does not fit in with the hard sell approach that Larry knows Charlie Traynor (Herb Voland), the advertising manager for Adrienne Sebastian (Mala Powers) Cosmetics, wants.
Samantha and Darrin frantically search for Clio who ends up in the home of a young boy, a pet store, and then with an organ grinder (Cliff Norton).
Even if Serena changes her back into Clio Vanita in time, will she like Darrin's new slogan as she wasn't too keen on his campaign ideas the night before.
While boozing client W. R. Campbell (Cliff Norton) is over for a dinner party, Endora livens things up by zapping up perfect busts of both Darrin and Larry, which also talk to the soused mortals.
Larry shows up with Darrin's newest client, Evelyn Tucker (Gail Kobe) of Brawn Cologne, and her assistant, Bobby Flynn (Paul Smith).
J. Earl Rockeford (Edward Andrews), a McMann & Tate client, asks Darrin and Samantha to join his country club, Burning Oak.
Darrin makes a successful presentation to marketing executive Carlos Aragon (Victor Millan) for the launch of his company's Mexican bottled drink, Bueno.
Darrin and Samantha welcome their new maid Esmeralda (Alice Ghostley), a shy and insecure witch who fades in and out when she is nervous and conjures up accidental witchcraft every time she sneezes.
His arrival is bad timing as Larry informs Darrin that they will be hosting a business dinner for a potential new client, Evelyn Charday, who is trying to market a new men's cologne.
In the show's fifth Halloween-themed episode, Endora uses her witchcraft to transform Darrin into an ugly old witch he depicted her to be, and refuses to remove the spell until Samantha promises to cancel her Halloween festivities with Tabitha.
Things gets more complicated with Darrin's latest client, Harold Bartenbach (Larry D. Mann), gets an idea that he would like to use one of those haggard looking witches in his upcoming advertising campaign.
Darrin reluctantly accepts a watch from Maurice that enables him to perform minimal witchcraft, but he soon finds it difficult to resist the benefits that come with being a warlock — especially when he obtains inside information on a lucrative advertising account with father-and-son clients, the Blisses (J. Edward McKinley and John Fiedler).
Esmeralda mistakenly zaps Santa Claus (Ronald Long) to the Stephens home and cannot get him back to the North Pole in time to finish the toys for Christmas.
After she tries to spill the beans to Frank, Darrin's father and her husband, the Witches Council pulls the plug on Samantha's powers, and she ends up believing she is truly insane, checking herself into a rest home.
It does seem to reap positive rewards with regard to the Bob Braddock (Arch Johnson) account, which Larry wants Darrin to take over.
When Serena fills in for Samantha at a raffle ticket sale, a client of McMann & Tate named George Dinsdale (Jack Cassidy) falls for her.
Norton, Esmeralda, advertising client George Meiklejohn (Charles Lane), and his wife (Sara Seegar) all end up under the effect of the potion, and chaos ensues.
A former boyfriend of Samantha's named Ashley Flynn (Noam Pitlik) poses as a dog to make trouble for the Stephenses in the presence of Darrin's new client, Charlie Gibbons (Edward Andrews).
Dr. Bombay's spell, designed to remove "guilt", stops the bikes from appearing but now Samantha's hiccups cause any "gilded" object nearby to disappear.
Malvina (Arlene Martel), the hateful witch who trapped him, sends her back in time to the court of King Henry VIII (Ronald Long).
When Darrin's cousin Robbie (Don Knight) spots the creature in the lake, he decides to call in a specialist, the Baron von Fuchs (Bernie Kopell), to take photographs.
Adam demonstrating those powers in front of the Committee has unintended consequences, but left to his own devices and a little motherly guidance, he may be able to show what he can when it really counts.
Samantha is required to enroll Tabitha in school, where she meets a bully named Charlton Rollnick, Jr. (Michael Hughes) and zaps him into a bullfrog, scaring her teacher, Mrs. Peabody (Maudie Prickett).
Esmeralda accidentally brings George Washington (Will Geer) into the 20th century, but the president and his wife Martha (Jane Connell) find it difficult to adjust to modern times.
While George Washington (Will Geer) awaits his court appearance before Judge Armstrong (Herb Voland), Larry wants to use the president in ads for Mr. Jamieson's (Jack Collins) Whirlwind Washing Machines.
A dinner party for prospective clients Cora Mae (Sara Seegar) and Walter Franklin (Parley Baer) ends in disaster after Endora casts a spell on Samantha's unicorn pin that causes every mortal that comes near it to tell the absolute truth.