Juliette and Nick agree to perform the ritual that will restore Nick's powers, after hostile Wesen threaten Rosalee and Monroe. Meanwhile, Nick and Hank investigate three mysterious crashes over a six-year period, dating back to one of Nick's first cases. Meanwhile, Josh arrives in Portland, and Adalind and Viktor compare notes about who took Diana.moreless
A South American heiress living in Portland accidentally kills a pedestrian while driving away from what she claims is a talking wolf. Nick and Hank investigate and suspect that a Wesen is involved. A powerless Nick refuses to involve Trubel and asks Monroe to help identify the killer. Meanwhile, Trubel deals with a Wesen who has learned that Nick is no longer a Grimm, and Viktor continues his mind games to break Adalind.moreless
Nick and Hank investigate the death of an ex-boxer and have no choice but to involve Trubel when they suspect Wesen involvement. Meanwhile, Elizabeth goes with Monroe and Rosalee to find Adalind's potion. And in Vienna, a fellow prisoner helps Adalind escape her cell.moreless
Nick and Hank continue pursuing the Wesen who is stealing memories from military contractors, and have no choice but to turn to Trubel for help. Meanwhile, Renard recovers and Viktor imprisons Adalind.
Nick adjusts to the loss of his Grimm powers and tries to figure out how to deal with Trubel as the fourth season opens. Meanwhile, Wu has an unpleasant flashback; a new group of Wesen come to Portland and steal people's memories; Capt. Renard fights for his life; and Adalind's desperation to find her child lands her in Prince Viktor's clutches.moreless
Pierce witnesses the death of a gallery owner, but he comes to believe it was actually a murder. Pierce and Moretti try to hunt down the killer, only to end up in the middle of a daring art heist. Meanwhile, Pierce analyzes his relationship with Natalie.moreless
While Roman and Emery keep their relationship a secret, Emery and others are permitted into the Sector to celebrate an Atrian family holiday. Julia must fight to keep her healing a secret when she is approached by Ms. Benton. Drake is reunited with someone from his past.moreless
When an anti-cult activist is murdered, Jane must determine if cult leader Bret Stiles is responsible.
Nick and Greg have a barn full of scattered body parts to piece together - without names or heads to identify them. Langston's old nemesis, Nate Haskell, is back in action and playing his usual game of five-level chess against the LVPD.moreless
In Los Angeles, Gibbs and McGee continue working with the NCIS division in order to track a terrorist cell. Agent Callen goes undercover, while a psychologist uncovers the truth about the relationship between Gibbs and Agent Macy. Meanwhile, Tony fears that Ziva may not be loyal to NCIS.moreless
The team heads to LA to work with the team there to investigate a murder, which soon turns into something bigger. Meanwhile, Tony begins snooping into Ziva's private life.