In Season 3, Nick deals with some surprising aftereffects of his zombie attack and the outcome is more positive than he could have anticipated. Meanwhile, he works to rebuild his relationship with Juliette, whose newfound knowledge of Nick';s world leads to her being increasingly involved in his Grimm work. The zombified Nick proves to be more than the Baron can handle, and crashes the plane while still over the Portland area, where he wreaks havoc at a bar. Adalind begins the trials to regain her powers.
Grimm has built some disparate, necessary pieces while staying alive over the past two years, to the point where the show has a surprisingly fervent niche fan base and actual anticipation heading into this season.
"A Dish Best Served Cold" is my favorite Grimm episode this season by far, and probably my favorite since sometime partway through season two as well. It serves as a real reminder of why the show is still so entertaining.