Grimm

After their face-off with Kimura, Nick finds himself trying to come to grips with the return of his mother. A trail of brutal murders unveils a foreign conspiracy to hunt down Nick, leading to several revelations about his past.

As Nick and his mother continue to battle the Mauvais Dentes, Monroe and Rosalee fight against the clock to save Juliette. More details are revealed about the source of JulietteÂ'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.

As Hank continues to seek help to cope with the inexplicable siting he had, an old friend, Jarold Kempfer, needs his help when his daughter goes missing. Nick's expertise as a Grimm comes in to play as he investigates the disturbing motives linked to the disappearance.

While investigating an accident site, Nick comes upon a bizarre and gruesome Wesen disease that is spreading quickly. A romantic day out for Monroe and Rosalee takes a dangerous turn when they encounter an infected creature that is out for blood. Meanwhile, Captain Renard gets a tip about a dangerous foreign fugitive who's made his way to Portland.

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.

Angelina comes back in to town with bad tidings as Monroe learns his continued cooperation with the Grimm may come at a high cost. Nick comes to Hank for help to keep Monroe safe and Hank uses this time to get caught up with his knowledge of the "Wesen world." Meanwhile, an old European acquaintance pays Captain Renard a visit, but it's hard to tell if this visit is for business or pleasure.

After investigating a grisly murder, clues lead Nick and Hank to a seemingly unstable father who is on the run with his daughter. As they learn more about the case they realize that the girl's father may be the least of their worries. At the spice shop, Monroe finds out filling in for Rosalee isn't as simple as he'd hoped it would be.

Nick and Hank are called to the scene of a murdered high school academic decathlete and learn just how competitive some extracurricular activities can be, and the extremes some coaches and parents will go to give students the best chance for success.

Despite the enthusiastic anticipation of the city's residents for Halloween, a series of horrifying child abductions make their way to Portland, quickly spoiling the holiday spirit. Nick and Hank join forces with Valentina Espinosa, a mysterious detective from Albuquerque, to help find and capture the elusive suspect.

When a brutal vigilante homicide is made public, it sends Portland's Wesen community into a frenzy. As Nick (David Giuntoli) investigates further, he discovers a pattern similar to that of a particularly brutal line of past Grimms.

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.

Adalind returns to wreak havoc in everyone's lives and avenge her mother's brutal death. She has her eyes set on Nick and those closest to him - especially Hank and Juliette. Elsewhere, Captain Renard's obsession continues to escalate. Meanwhile, a surprise visit at the spice shop gives Monroe more than he ever bargained for.

After Nick (David Giuntoli) learns about Juliette (Bitsie Tulloch) and Captain Renard (Sasha Roiz), he must deal with the consequences. Things get even more complicated when Nick is called to investigate his own crime. Meanwhile, the search for the key intensifies as Captain Renard finds Nick's trailer and makes a surprising alliance.

The Wesen code of honor comes into question when Nick (David Giuntoli), Hank (Russell Hornsby) and Monroe (Silas Weir Mitchell) discover a series of bank robberies with Wesen using true natures as their disguises. Meanwhile, Juliette (Bitsie Tulloch) finds herself tormented by faint, slowly returning memories that cause her to question her mental state.

When a mysterious case of sudden blindness causes a woma's death, Nick (David Giuntoli) and Hank (Russell Hornsby) come across a disturbing Wesen that feeds off its victim's tears. Meanwhile, Adalind (Claire Coffee) contemplates the significance of her new situation, while Juliette (Bitsie Tulloch) continues to work with Rosalee (Bree Turner) in an effort to fix her memory.

When a gruesome homicide brings an office party to a screeching halt, Nick (David Giuntoli) and Hank (Russell Hornsby) find themselves battling a Wesen on a completely new platform - online. Meanwhile, Juliette's (Bitsie Tulloch) mysterious hallucinations finally start to take shape, giving them a whole new meaning.

While on jury duty, Rosalee (Bree Turner) tasks Nick (David Giuntoli), Hank (Russell Hornsby) and Monroe (Silas Weir Mitchell) to help stop a defense attorney from using his particular "Wesen wiles" to overturn what should be an open-and-shut murder case.

Nick (David Giuntoli) finds himself fighting a wildly different sort of nature freak in a desperate attempt to keep a volcano from burying Portland in lava. Meanwhile a pregnant Adalind (Claire Coffee) meets a powerful new ally (guest star Shohreh Aghdashloo) in Europe.

Mysterious cow mutilations and reports of glowing creatures put Nick (David Giuntoli) on a case that forces him to question the existence of aliens within the Wesen world. He also meets a strange UFO expert who seems to know more than he's letting on. Meanwhile, Nick digs further into the key, and Juliette's (Bitsie Tulloch) romantic memories of Nick start coming back in a big way.

Nick (David Giuntoli) discovers a muse-like Wesen (guest star Nora Zehetner, "Heroes") 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.

Nick (David Giuntoli) and Hank (Russell Hornsby) discover a new kind of strange when they investigate suspects being found dead - for the second time. In Europe, Adalind (Claire Coffee) finds herself in the middle of a feud between Frau Pech and Stefania (guest star Shohreh Aghdashloo ) while working over the details of her pending transaction.

Just when things look like they're back to normal with Juliette (Bitsie Tulloch), Nick (David Giuntoli) is called to investigate a flurry of rage-fueled assaults happening all over Portland. He goes to Monroe (Silas Weir Mitchell) and Rosalee (Bree Turner) for help battling Portland's newest wave of "undead.