Grimm: Wesen Will Rise and Keys Will Be Explained in Season 5

Evan Lewis
Scott Green/NBC

GRIMM -- "Cry Havoc" Episode 422 -- Pictured: (l-r) Bitsie Tulloch as Juliette Silverton, David Giuntoli as Nick Burkhardt -- (Photo by: Scott Green/NBC)

Season 5 of NBC’s Grimm got a new tagline at Saturday’s Comic-Con panel with the news that a faction of the show’s supernatural creatures will rise to wage war with human kind.

The show’s producers also confirmed during the panel that the keys, which have been a source of mystery on the show since the very first episode, will finally be explained this season.

The Grimm panel opened with a recap sizzle-reel that culminated with confirmation that what happened in the Season 4 finale really was really as final as it seemed.

The fact that Bitsie Tulloch was absent from the cast at Friday’s panel drove home the fact that Juliette really is gone, but the character will be returning in Season 5, at least for Nick.

Aside from duties as a father, Nick’s primary motivation in Season 5 will be seeking revenge on Juliette’s killers.

Luckily, those two motivations aren’t mutually exclusive, according to David Giuntoli, who plays Nick on the show.

The panel also spent some time delving into the relationship between Monroe and Rosalee, and there were a few hints that a Monrosealee baby could be a possibility down the line.

Monrosalee isn’t the only Season 5 romance on Grimm. There may be something exciting in store for Hank as well.

Toward the end of the panel, the producers teased plenty of new Wesen, and name-dropped the Loch Ness monster herself as inspiration for one in particular.

And if the highlights aren't enough, the entire Comic-Con panel will be available to view on the show’s YouTube channel on Sunday.