 | Jerry Mayer, Paul L. Friedman Directed by Richard Kinon |
|---|
Airdate: Jan. 4, 1968
Guest cast: John Abbott as Leonardo Da Vinci,
Irwin Charone as Pritchfield, William Thegoe as the tour guide,
Vince Howard as the museum guard. 
Dismayed to find Samantha hard at work painting the house,
Aunt Clara conjures up a top painter - Leonardo Da Vinci.
Samantha asks her to send him back but Aunt Clara can't
remember the reverse spell. To make Leonardo less conspicuus, Aunt Clara zaps him into one of Darrin's suits. At his office,
Darrin finds himself in Renaissance attire, with palette and paint
brush. J. P. Pritchfield of Mint-Brite Toothpaste, thinks Darrin
plans to use the Mona Lisa smile in his ad campaign. Darrin
makes his way home and learns that Leonardo has left the house.
Worried that he will be picked up, Samantha and Darrin begin
a search. In a museum, Leonardo sees some modern sculpture.
He thinks it is raw stone and begins to chip away with mallet and
chisel. Samantha arrives in time to stop his arrest and returns the
piece to its modern form. Leonardo is wrathful that his Mona
Lisa will be used to sell toothpaste. Samantha tells him the only
way to prevent it is to provide another idea for the advertising.
Later, Darrin presents a palette of toothpaste in matching
flavors, with Leonardo's picture on the package. Pritchfield is
sold on this major breakthrough into the children's toothpaste
market. Aunt Clara finds the reverse spell but insists that
Leonardo must paint her portrait before she returns him to his
place in history.