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Grimm Exclusive Video: A Wesen Secret From World War I

Aunt Marie's trailer strikes again!

On Friday's all-new Grimm (9/8c, NBC), Nick (David Giuntoli) and his pals turn to Aunt Marie's trailer for help researching a Wesen known as a Koschie.

Winter TV: Must-see new shows

They delve into the files for World War I and uncover a surprising secret about one historical figure. Check out this exclusive sneak peek of "Red Menace" below:

<iframe id="NBC Video Widget" width="560" height="315" src="http://www.nbc.com/assets/video/widget/widget.html?vid=n44556" frameborder="0"></iframe>

Grimm airs Friday at 9/8c on NBC.

View original <i>Grimm</i> Exclusive Video: A Wesen Secret From World War I at TVGuide.com

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<li>David Giuntoli</li><li>Grimm</li>

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