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'Revenge' Sneak Peek - Emily's Got A Gun

Description:Emily can breathe a sigh of relief now that she's gotten Tyler out of her way, but there's no rest for the wrathful as this week's episode sees Miss Thorne set her sights on a new target. Roger Bart (Desperate Housewives) joins the Revenge cast as Mason Treadwell -- a biographer who wrote the definitive book on David Clarke, and may or may not be an ally in Emily's quest for revenge. (3:08)

Source: TheInsider.com

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