Grimm - Season 2 Episode 21 - Video Preview - The Waking Dead

Here's the video preview of Grimm Season 2 Episode 21: "The Waking Dead" on NBC.

Grimm 2x21 'The Waking Dead' - There might be zombies in Portland when Nick and Hank investigate suspects who are turning up dead—for the second time. Meanwhile, Juliette pressures Monroe to share details about the Wesen world and Nick's involvement as a Grimm; and Adalind is caught in a royal feud. Original Air Date: May 14, 2013 on NBC.