Sasha Roiz, Bitsie Tulloch, David Giuntoli, and Silas Weir Mitchel speak onstage at the &#8216;Grimm&#8217; panel session during the NBCUniversal portion of the 2013 Winter TCA Tour- Day 3 at the Langham Hotel on January 6, 2013 in Pasadena, California
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