Grimm Scoop: David Giuntoli & Sasha Roiz Warn A 'Kerfuffle' Is Coming Between Nick & Renard

Access Hollywood
Sasha Roiz, Bitsie Tulloch, David Giuntoli, and Silas Weir Mitchel speak onstage at the 'Grimm' 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 -- Getty Images

Expect Detective Nick Burkhardt and Captain Sean Renard to come to blows during the second half of "Grimm's" Season 2, returning to NBC this March.

"Not to spoil it too much," series star David Giuntoli began at the NBC portion of the Television Critics Association Winter Tour 2013 in Pasadena, Calif., "but it finally all comes to a big, angry..."

PLAY IT NOW: Silas Weir Mitchell Answers ‘Grimm’ Fan Questions

"Kerfuffle," Sasha Roiz, who plays Capt. Renard, chimed in.

"Yeah, kerfuffle... to resurrect a word, and yeah, it comes to blows," David, who plays Nick, continued. "And he has a height advantage on me, but I have a rage advantage."

VIEW THE PHOTOS: ‘Grimm’s’ David Giuntoli

It's likely that many reasons will be responsible for the battle - for starters, Nick will find out that Capt. Renard isn't exactly human, and, of course, at the end of 2012, Nick realized that his girlfriend suffering from memory loss - Juliette -- has a thing for his boss.

"It's been a longtime coming. I was very excited to finally have a confrontation," Sasha said. "We've waited a season and a half to see what will transpire when he finally discovers [Renard's secret]. It's gonna be powder keg and it's a lot of fun to work with David on a whole other level now that he's in the know."

And the show is expected to get a little bit steamier too.

VIEW THE PHOTOS: Primetime Hunks: The Hottest Guys On Television!

"There a tremendous amount of stuff going on," Bitsie Tulloch, who plays Juliette, said. "And in addition to the kerfuffle between these handsome men, there was also a sort of bedroom scene that was so intense, it required a stunt coordinator and hours of rehearsal, which 'Grimm' has not yet done, which is really, really fun and crazy."

Asked by a reporter who her partner is in the scene, Bitsie commented, "I shall not say."

VIEW THE PHOTOS: Hollywood’s Favorite Leading Ladies: Then & Now

"Grimm" returns Friday, March 8 at 9/8c on NBC.

-- Jolie Lash

Copyright 2013 by NBC Universal, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.