While visiting an antique shop, Tara is waylaid and chloroformed.  Upon awakening, she finds that she has gone back in time to 1915 and that her name is Pandora, (the episode’s title).  It is all part of a scheme hatched by a pair of avaricious nephews to discover the hidden location of their rich uncle’s vast fortune.  In the course of events, John Steed harks back to previous adventures with his former partner Emma Peel, played by Diana Rigg.  This episode first aired in the US on March 10, 1969.