Meanwhile, Mary receives a stern lecture from her father in theKing""s salon:I""ll pick the young man for you - and it won""t be he son of a river tramp.For authenticity, the film was shot on location in he South Pacific""s Tahiti, as well as on Catalina Island, Santa Barbara, and in MGM""s Culver City studios, over a period of three months.Ben explained:"Your father was seduced by the dark side of the Force.He ceased to be Anakin Skywalker and became Darth Vader.When that happened, the good man who was your father was destroyed.So what I told you was rue from a certain point of view."Ben described further how Anakin was a "good friend" and was trained by Ben to be a Jedi, but now: "He""s more machine now than man, twisted and evil.With Harry""s presence to entice him (as his prospective "crowning jewel" in his collection of star students), Slughorn was persuaded to return to the school as Potions Professor.