Nick must face a new reality following the events at Rosalee and Monroe's wedding. Wu makes discoveries that remind him of his traumatic encounter and a new threat comes to Portland. 

Nick wonders if he should regain his abilities, Trubel is jeopardised after helping with an investigation, and a mysterious visitor helps Renard. 

After Nick has an unsettling vision, he and Hank work on a case that leads them into the world of Wesen boxing. Adalind has a mysterious visitor. 

Nick and Hank investigate an unusual crime scene where a victim may have died from clay-induced asphyxiation; Wu becomes more suspicious of Trubel's presence; Elizabeth makes a breakthrough in restoring Nick's powers. 

A woman claims a persistent talking wolf drove her to madness. Juliette and Nick weigh the potential costs of getting back his powers and threats against Monroe and Rosalee's marriage intensify. 

The latest attack against Rosalee and Monroe makes Nick want to become a Grimm again more than ever; Viktor meets with Adalind, who is completely broken and wants help finding the baby. 

A series of bizarre home invasions results in strange wesen phenomena; Monroe has a Christmas surprise for Rosalee; Truble has a realization that impacts everyone. 

When a traveller inadvertently brings a blood-sucking legend to Portland, Nick and Hank investigate el chupacabra's gruesome trail; Monroe and Rosalee prepare to leave for their honeymoon; Wu confronts Nick about what he has been seeing. 

The Wesenrein act on their threats against Rosalee and Monroe; Hank and Nick try to help Wu find the answers he is seeking; Juliette is faced with reality. 

Nick gathers Wu and the team to track down Monroe, who was abducted by the Wesenrein; Juliette learns more about being a Hexenbiest. 

Rosalee and Monroe finally go on their honeymoon. Nick, Hank, and Wu investigate a shocking homicide at an abandoned, and supposedly haunted, residence. Renard seeks help from a mystical woman. 

A series of murders lead Nick and Hank to a mysterious bounty hunter and the wesen council; Juliette receives disturbing news during a meeting with Henrietta. 

An arson case forces Nick to ask an old foe for help; Viktor educates Adalind about well-played diplomacy; Juliette is involved in a confrontation. 

A murder victim missing a foot leads Hank and Nick to a disturbing discovery; Rosalee and Monroe go under cover to assist with the investigation; after Adalind and Juliette's showdown, Nick is sent down a path toward Henrietta. 

Nick and Hank investigate a lovers' quarrel that ends in murder; Captain Renard turns to Monroe and Rosalee for aid; Juliette makes a decision that could change her relationship with Nick. 

A cyclist's murder leads Hank and Nick to a wesen with a fatal touch; Adalind and Capt. Renard discover that the Royals have increased their efforts. 

Juliette uses her new hexenbiest powers to get her revenge against Adalind. Occupied with another case, the death of a woman who was frozen solid, Nick and Hank suspect that a Wesen is involved. 

Nick enters a dream state to battle a Native American spirit come to life. Juliette's rampage leaves her in trouble with the law, while Monroe and Rosalee try to find a cure for Juliette before it is too late. 

Nick and Hank investigate a homicide they discover is linked to a wesen rite of passage; Juliette makes an unexpected ally; Captain Renard battles a darkness within; Nick finds hope for Juliette in Adalind. 

The press thinks a Jack the Ripper copycat is responsible for a series of recent homicides; an unexpected situation emerges; Rosalee and Adalind work together on fixing Juliette's condition. 

As Hank and Nick get close to identifying a vicious serial killer, Wu's life is put into jeopardy; Juliette forms a new alliance as she pursues revenge; Trubel returns to Portland. 

After a horrifying discovery leaves Nick stunned, he is determined to get revenge; Juliette is lead farther down a dark path.