01:15Star Trek: The Next GenerationSeries 7Episode 17: MasksBBC Two Duration: 45 minutes Sat 1st Nov 2008, 01:15 on BBC Two Northern Ireland (Analogue)Sci-fi drama series. An ancient alien civilisation exerts a bizarre influence over the Enterprise, and Data is taken over by several different personalities.ContributorsJean-Luc Picard:Patrick StewartWill Riker:Jonathan FrakesData:Brent SpinerBeverly Crusher:Gates McFaddenGeordi La Forge:LeVar BurtonWorf:Michael DornGenresDramaSciFi & FantasyBrandStar Trek: The Next GenerationSeriesStar Trek: The Next Generation: Series 7 Source: BBC Online