The Stephenses have a lot of 'splaining to do when Endora gives them a portrait of Samantha, painted in Mona Lisa fashion by Leonardo Da Vinci himself. To cover up Endora's witchcraft, Darrin takes credit for the painting, and as a result is commissioned to paint a portrait of Larry Tate's wife, Louise. Inevitably, he gets fired -- again! -- when his masterpiece emerges as a ridiculous caricature. Written by Michael Morris, "Mona Sammy" originally aired on April 2, 1970. ~ Hal Erickson, Rovi