Katie Cassidy Cast in A Nightmare on Elm Street

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ShockTillYouDrop.com has learned exclusively that Katie Cassidy has been cast in New Line/Warner Bros.’ A Nightmare on Elm Street. She’ll be joining Jackie Earle Haley, Rooney Mara, Kyle Gallner and Thomas Dekker in the Samuel Bayer-directed horror film opening in theaters on April 16, 2010.

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