Samantha needs help painting her house, and Aunt Clara conjures up the most famous painter of all time, Leonardo da Vinci. Da Vinci is mad when he learns that his famous Mona Lisa painting will be used in Darrin's campaign to sell toothpaste. Samantha then gets him to create another best-selling idea.
Elenco: Elizabeth Montgomery , David White , Agnes Moorehead , Dick Sargent , Sandra Gould , Bernard Fox , Kasey Rogers , Erin Murphy , Diane Murphy , Ronald Long , Ivor Barry , Alice Pearce .