Bewitched S02 E18 And Then There Were Three

"Witches are people too!"

We welcome a new addition to the Stephens' family: baby Tabitha. Endora wants to see how she looks grown-up but Darrin is dead set against it. At the same time, Serena, Samantha's mischievous look-alike cousin, comes to town to visit Samantha and Darrin thinks that Serena is the grown-up Tabitha!