Nancy Kovack, who played Darrin Stephens' ex-girlfriend, Sheila, in earlier episodes of Bewitched, is here cast as Clio Vanita, Darrin's beautiful and flirtatious female client from Italy. Upset at Clio's blatant efforts to ensare Darrin, Samantha's lookalike cousin, Serena, transforms the sexy seductress into a monkey. Only trouble is, Clio goes "ape" just before closing a deal worth half a million dollars. The first episode in a two-part story arc, "Cousin Serena Strikes Again" was written by Ed Jurist, and originally aired on January 9, 1969. ~ Hal Erickson, Rovi