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When government scientist Xavier Fitch (Ben Kingsley) intercepts a space transmission containing the genetic sequence for an alien life form, he uses it to produce "Sil" (Natasha Henstridge) -- a gorgeous alien-human hybrid. As Fitch's team grows concerned at her rapid rate of growth, Sil wrecks the laboratory and begins a violent quest for a suitable male human to impregnate her. The U.S. government dispatches top assassin Preston Lennox (Michael Madsen) and a team of experts to stop her. Wikipedia