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"House star Lisa Edelstein is to appear on Castle. The actress will play a federal investigator named Rachel McCord, TVLine reports.   Edelstein&amp;#039;s character will help Beckett (Stana Katic) to come to an important decision about her future in the ABC drama&amp;#039;s sixth season. Best known for her role as Lisa Cuddy on House, Edelstein has recently played guest roles on The Good Wife, Elementary and Scandal. Castle - which stars Nathan Fillion as the title character - was officially picked up for a sixth run in April. The new season of Castle will air in the fall, though a premiere date for the latest episodes is yet to be confirmed. &amp;gt; Castle, Body of Proof: New seasons to air on Alibi in UK Watch a clip from Castle below:      "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/ustv/news/a497584/house-star-lisa-edelstein-lands-castle-role/>