Being Human’s star Sam Witwer will guest star in an upcoming episode of Grimm.
He’ll play “a tortured soul named Maximillian who is the main attraction at a carnival. With each performance, he is getting dangerously closer and closer to sacrificing the last of his humanity.” Source: TVLine
He will appear in the episode “The Show Must Go On”.
As an interesting story, Sam Witwer and Grimm’s star David Giuntoli are real-life friends. Just days ago, the two friends were live-tweeting during an episode of Witwer’s show Being Human.