Nick and Hank's investigation of a dead high school teacher leads them to the school's outcast, Roddy. Nick realizes that there's more to Roddy than meets the eye, and enlists Monroe's help to get through to the troubled teenager before he exacts revenge on the students who wronged him. Meanwhile, Nick learns that his presence is beginning to affect the creature world.

Nick is called to a suspected arson case, which exposes a longstanding family feud that brings Monroe face-to-face with characters from his troubled past. While Monroe wrestles with restraining his wild side, it's up to Nick to keep everything from going up in flames.

A prison escapee returns to Portland and seeks revenge on everyone who got him arrested. Nick notices his unusual strength and high tolerance of pain and calls Monroe to help put his rampage to an end.

An underground fight club where monsters participate in blood battles is tied to a murder that Nick and Hank are investigating.

Nick looks into a theft and murder at a spice shop and discovers that it was owned by a Wesen, and that the thieves were after a dangerous drug. Meanwhile, Hank falls under Adalind's sway and Wu gets caught in the middle.

Nick and Hank find a murder crime trail backtracks abroad; when Nick finds Monroe and Rosalee are harboring the prime suspect, an apparent conflict arises between police duties and his inner Grimm.

When Juliette stumbles upon a horrifying murder, Nick learns the suspected creature is unable to return to a human form; Hank sees something inexplicable.

As Nick and his mother continue to battle the Mauvais Dentes, Monroe and Rosalee (Bree Turner) fight against the clock to save Juliette. More details are revealed about the source of Juliette’s illness, resulting in an epic showdown. Back at the precinct, Hank senses that something is amiss when Nick lands in hot water with the FBI. Meanwhile, Captain Renard continues to reveal himself as he deals with his estranged brother.

When a local Reverend reports that his church has been robbed, Nick quickly learns that it’s a Wesen church, and enlists Monroe to check for any suspicious activity regarding the shepherd’s flock. Meanwhile, Nick and Juliette continue to figure out the rules of their relationship as a dangerous opponent lurks in the shadows with his sites on Nick.

Hank and Nick investigate when a high school competition turns deadly; Capt. Renard is faced with an unwanted infatuation.

Hank starts reflecting on an arrest he made earlier in his career regarding a man who committed murder claiming “self-defense against monsters.” With the man’s death sentence rapidly approaching and the knowledge he’s recently gathered from Nick, Hank begins to wonder if there was more truth to the man’s seemingly absurd story then he once thought. Back at the spice shop, Monroe finds himself involved in a situation he never saw coming.

Nick, Monroe and Hank discover that members of a Wesen community have been responsible for a series of bank robberies; Juliette questions her mental state.

While on jury duty, Rosalee tasks Nick, Hank and Monroe to help stop a defense attorney from using his particular “Wesen wiles” to overturn what should be an open-and-shut murder case. Back at the precinct, Captain Renard brings Nick and Hank in on his own recent dealings with the Verrat, to keep them on their toes. Meanwhile, a return to the trailer brings a flurry of memories of Nick rushing back to Juliette.

Nick discovers a muse-like Wesen with the ability to influence those she gets close to – some with positive results, others with terrifying ones. Nick must find a way to get close without losing himself in the process. Juliette arranges a dinner date with Nick in the hopes of clearing the air, but their plans go awry as the case intensifies. Meanwhile, Rosalee takes her first visit to Aunt Marie’s trailer.

Monroe, Hank, Rosalee and Juliette track down a manic Nick and do all they can to find him and reverse what's been done to him before he causes any more damage. Meanwhile, Captain Renard does his best to clean up the zombie fallout on all fronts - domestic and international. Elsewhere, the more time Adalind spends with Stefania, the more disturbing things seem to get in her quest to regain her Hexenbiest abilities.

Nick and Hank are on the case as repeat instances of apparent vigilantism have whispers of an old Spanish legend making their way through a working-class Portland neighborhood. Elsewhere, Juliette learns the truth about Nick’s mother. Meanwhile, Adalind has a brief scare during her ultrasound.

After a string of delinquent teens go missing, an old Wesen tale of an evil Santa who brings more than just a lump of coal may be the prime suspect. The investigation intensifies as Nick and Hank take things a little too far. Meanwhile, Monroe enlists Juliet to surprise Rosalee for their first Christmas together with unintended results. Elsewhere, Captain Renard’s tour of Europe brings him closer to tracking down Adalind.

Nick and Hank are called to the gruesome murder of a veteran working in home security. During their investigation, they discover this might be one of several revenge killings regarding a horrifying cover-up involving members of the army and military contractors. On the domestic front, Monroe accompanies Rosalee during her long overdue reunion with her mother and sister. In Europe, Adalind sees hints of what she thinks might be her powers returning.

A horrible new predator creeps into Portland with its sight set on a young expectant couple who are close friends of Sgt. Wu. Nick and Hank must figure out how to deal with Wu as the investigation escalates. Meanwhile, Adalind prepares for a special delivery while her enemies are hot on her trail.

The Resistance's plan to keep Adalind safe gets kicked into high gear when an unexpected ally arrives to ensure she and the baby make it out of Europe safely. In Portland, as Monroe and Rosalee prepare for their upcoming wedding, Nick and Juliette are reminded of their failed proposal.

When Nick brings Trubel on a ride along with Hank, they end up investigating the murder of a young woman; Adalind is hopeful after making a discovery.

The Gedächtnis Esser continues to steal memories and Captain Renard's mother visits him in the hospital to try to save his life. Meanwhile Wu confronts Nick about Trubel and Nick and Adalind share a psychic connection.

A woman claims a persistent talking wolf drove her to madness; Juliette and Nick weigh the potential costs of getting back his abilities, and the threats against Rosalee and Monroe get worse

A traveler manages to bring a blood‑sucking legend with him as he shows up in Portland. Nick and Hank investigate the gruesome trail of “El Chupacabra.”

Monroe and Rosalee are finally off on their honeymoon, but that doesn't mean trouble isn't stirring in Portland. Nick and Hank are called to a shocking homicide at an abandoned residence many Portland locals think is haunted, even the survivors swear a ghost committed the murder. Meanwhile, on the heels of Juliette’s startling revelation Captain Renard seeks the help of a mystical woman from his past.

Nick and Hank investigate a murder victim with his foot cut off, and stumble onto a disturbing Wesen take on the "lucky rabbit’s foot." In an effort to help, Monroe and Rosalee go undercover. Meanwhile, the fallout from Adalind and Juliette’s showdown still has Nick reeling and sends him on a path that leads to Henrietta.

Nick and Hank are called to investigate a rare Wesen that leaves its victims frozen solid. Meanwhile, Juliette starts to feel that she is losing her humanity as she seeks to get revenge on Adalind. Elsewhere, Captain Renard continues to suffer from mysterious bleeding and visions while Monroe works toward coming to grips with the Wesenrein incident.

While investigating a grisly murder, Nick and Hank get closer to uncovering the identity of the serial killer while Wu's life is put in grave danger. Having turned down Monroe and Rosalee's offer, Juliette solidifies a new alliance as she works to get her revenge. Elsewhere, Trubel makes a surprising return to Portland.

Nick makes changes to keep Adalind and his child safe, with the help of Monroe and Rosalee. Hank and his new partner investigate a murder at an investment group.

Nick and Hank are called to the scene when three Wesen go out on a hunt at a local dump and get more than they bargained for when two turn up dead after they encounter the mythical Rat King. Meanwhile, a very badly wounded Trubel is taken to the hospital and Nick finally meets Meisner.

A local legend comes back to life as Nick and Hank investigate a mysterious sighting linked to a tourist's death at a local lake. Rosalee's past comes back to haunt her. Elsewhere, Capt. Renard continues to support a candidate for mayor. Meanwhile, Nick is shown the scope of the Wesen uprising as the secret government agency takes him into the heart of their Portland operations center.

Newly gained artifacts take Nick and Monroe closer to the source of a long-gestating mystery. Elsewhere, Black Claw makes a deadly move that will send Portland into disarray.

Following a brutal attack in the woods, Nick and Hank stumble upon a terrifying Wesen disease that may be the inspiration for the modern-day werewolf myth. Meanwhile, Adalind is offered an uneasy alliance that may help her get back what she wants most. Elsewhere, Eve's investigation uncovers a surprising revelation.

When the severed head of a young man is found under a bridge, Nick and Hank find themselves on the case of Japanese Wesen acting on an ancient tradition of revenge. Elsewhere, Adalind decides to go back to work at her old law firm and has her first face-to-face with Eve.

Nick leans on Monroe and Rosalee as he worries that he may lose everything as he continues to battle Black Claw. Renard ramps up his campaign as election time nears. Elsewhere, Adalind is faced with a very difficult decision in order to protect her children. Meanwhile, Hank's relationship with Zuri takes an unexpected turn and Wu tries to gain control of his new reality.

Following the massacre in Nick’s loft, Capt. Renard is hell bent on eliminating him once and for all. Hank and Wu head back to the precinct to keep an eye on the Captain and help give the gang the upper hand. Meanwhile, Monroe and Rosalee grapple with staying in Portland now that their family will be expanding. Elsewhere, Eve suffers the side effects of the mysterious stick’s healing power.

Nick and Hank join Wu to investigate a bizarre murder in a local park. Elsewhere, Capt. Renard continues to deal with a ghost from his past. Meanwhile, Monroe and Rosalee visit the doctor to see if Diana's premonition is true. Back at the loft, Adalind finds a very weak Eve in the tunnels and mysterious drawings scrawled on the walls.

Deadly attacks on a team of scientist lead Nick, Hank and Wu on a investigation unlike any they have had before. Meanwhile, as the research continues into the origins of the cloth, Monroe and Rosalee learn that Eve is still feeling the after effects of the death grip. Elsewhere, Capt. Renard reaches out to an old friend to get answers to the origins of the symbols drawn by Diana.

Eve goes on a mission to take on the mysterious force she saw in the mirror and finds herself in unfamiliar territory. When the gang discovers what she has done, Nick finds a way to join her. Meanwhile, an uneasy alliance is established when Capt. Renard is brought in to help and discovers this all may be connected to the person he cares for the most, Diana.