Lady Wantsomore

Lady Wantsomore was a character in the Julian Bashir, Secret Agent holodeck program. described her as "a beautiful socialite who's been brainwashed to assassinate the Queen of England". 
In 2373 Julian Bashir didn't have to try very hard to convince Jadzia Dax to play the role of Lady Wantsomore. () 
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Wantsomore