In the conclusion of a two-part story, Samantha takes over the responsibilities of Mary the Good Fairy (guest star Imogene Coca) when the latter partakes of a wee bit too much medicinal brandy. Trouble is, Mary refuses to re-don her wings, and it looks like Samantha will be in the Good Fairy business permanently -- minus her powers of witchcraft. And how will all this affect Darrin's relationship with his new client, Mr. Ferber (played by the ubiquitous Herb Voland). Originally telecast on January 28, 1971, "The Good Fairy Strikes Again" was written by Ed Jurist. ~ Hal Erickson, Rovi