Nick's destiny is uncertain as the zombies continue to overrun Portland. Hank helps everyone to fight back against the zombie invasion and Renard attempts to rescue Nick from danger. 

Monroe, Hank, Rosalee and Juliette track down a manic Nick in order to try and reverse what has been done to him before he causes more damage and violence. Adalind carries on trying to get her Hexenbiest abilities back. 

A series of disturbing crime scenes leads Nick and Hank to the unearthing of an old feud that's very familiar for Nick and Monroe. Nick does medical tests which show that his heart rate remains low no matter how hard he strains. 

Nick and Hank investigate a drowning death where the victim has mysterious marks on their ankles. Meanwhile, Rosalee is unpacking and Captain Renard makes a realisation about the possible identities of the Royal Baby's parents. 

Criminals start to fall victim to a series of brutal murders. Whilst investigating, it appears to Nick that the culprit may be a character from a Latino legend, on a vigilante killing spree. 

Nick and Hank investigate the death of a priest, who was performing an exorcism on a nine year old boy. They must find out whether the boy is a Wesen or is really possessed by a demon. 

After a string of criminal teenagers go missing, an old Wesen legend of an evil Santa may be the prime suspect. The investigation intensifies when Nick and Hank take things too far. 

The teenagers Derek and Quinn break into a car together and steal the presents that are in the vehicle. However, they are surprised by Knecht Ruprecht, who kidnaps Quinn. A little later, other children also disappear. 

Nick and Hank investigate a Wesen with healing abilities that may do more harm than good; Juliette takes in a friend; Hank puts the moves on his physical therapist; Captain Renard has a warning for Adalind. 

Hank's physical therapist and her brother get caught up in the investigation of a gang-related homicide. Upon learning that her friend is a Wesen, Juliette turns to Rosalee for advice. 

Nick and Hank investigate the gory murder of a veteran who worked in home security. They soon realise that this murder may be linked to several others, with hints of a massive cover-up. 

Nick and Hank investigate a cop killer who scalps his victims; Juliette tries to get in touch with Nick's mom; Adalind discovers she's closer to giving birth than she thought; Monroe's parents arrive early. 

Monroe tries to persuade his parents to embrace his life choices; Nick looks to Juliette for help on the wesen aspect of the cop-killing scalper case; Renard must contact Adalind to help keep her safe. 

When a predator sets its sights on friends of Sgt. Wu, Nick and Hank must figure out how to deal with him as the investigation escalates. Elsewhere, Adalind prepares for a special delivery. 

Nick and Hank find themselves in the middle of an ancient battle that gets more intense when the wesen council gets involved; an ally of the resistance is compromised while protecting Adalind. 

When a double homicide leads Nick and Hank to a carnival, Silas and Rosalee go under cover to find out what's going on behind the scenes; a resistance member makes a sacrifice for Adalind. 

An unexpected ally helps Adalind and the baby get out of Europe safely. The preparations for the wedding of Rosalee and Monroe remind Nick and Juliette of their relationship, which has broken down. 

The Verrat discover that Adelind and her baby have gone to Captain Sean Renard for help. Nick gets the help of Monroe and Rosalee to bring her back, as his mother tries to deal with the Royals. 

Nick and Hank are on the case of a dangerous female suspect leaving a trail of Wesen in her wake. Meanwhile, Adalind decides to take things into her own hands, even if that means allying with dangerous people. 

When Nick brings Trubel on a ride-along with Hank and they end up investigating the murder of a young woman. Meanwhile, Adalind becomes hopeful when she ends up making a special discovery. 

Nick and Hank are called to investigate a double murder, and quickly learn that the victims were from a special section of the Verrat tasked with finding rare objects related to the Wesen. 

It's Monroe and Rosalee's big day, but all is not well for those around them. Nick and Juliette make a realisation that could permanently damage their relationship. Meanwhile, Adalind continues with her plan that could lead to a catastrophe.