This episode marks the first appearance of Jeannie's wicked lookalike sister--who of course is also played by Barbara Eden. Jealous of the relationship between Jeannie and her master Tony (Larry Hagman), the raven-haired "Jeannie II" schemes to break up the couple. Her first step is to trap the real Jeannie in her bottle and take her place; the second is to drive Tony bonkers by having him zipped and zapped all over the world! ~ Hal Erickson, Rovi