Show summary:
In modern day Portland, Oregon, a police detective inherits the ability to see supernatural creatures.
Nick discovers that Hank is seeing Adalind, the Hexenbiest who tried to kill Aunt Marie; Capt. Renard must act when a visitor threatens his position; Monroe and Rosalee help Hank and Sgt. Wu.
Nick's romantic getaway with Juliette turns problematic when he meets the unsettling neighbors and learns that the troubled wife has a valuable treasure to protect. Also: Hank and Monroe embark upon new romances.
Nick and Monroe investigate the murder of a spice-shop owner, and the victim's sister may prove to be an ally for Nick; Capt. Renard recruits Adalind to hex Hank; Sgt. Wu gets caught up in Adalind's scheme.
An arson-related-homicide investigation brings Nick and Hank to the world of Portland fire dancing, and the case threatens Nick's relationship with Juliette.
A botched jewelry-store robbery results in murder and raises questions about rare coins; a friend of Aunt Marie's visits Nick with information about his family.
A double-homicide investigation lands Nick and Monroe in a creature fight club
A trail of homicides puts Nick and Hank in pursuit of a deadly heartbreaker; Nick's rising stature in the creature world prompts concerns about Juliette's safety
Nick finds a black market that supplies the creature world with human organs; Nick and Juliette befriend a pair of homeless siblings whose friends have vanished.
A gruesome homicide may be linked to a man's troubling childhood; Monroe receives a disturbing message from the creature community.
A prison escapee seeks revenge against those who put him behind bars, and his strength and high tolerance for pain makes Nick suspect the fugitive is a monste
A murder investigation in the woods leads to the reopening of a missing-person case; Nick asks Monroe to make contact with a feral creature
An arson case exposes a family feud; Monroe confronts people from his troubled past.
A high school teacher's death kicks off an investigation that leads Nick to a troubled, young, musical prodigy
Monroe goes undercover to get a whiff of a hypnotic suspect for Nick; a stranger seeks revenge for the death of a friend who was killed by a Grimm
An innocent flash-mob scene ends with a homicide; Nick learns more about his roots; Hank and Nick are tasked with protecting a shady character
Nick and Hank investigate a breaking-and-entering case that leads them to a mysterious family with a cultural heritage of blurring the line between right and wrong; Nick asks Monroe to safeguard Aunt Marie.
A university student is savagely attacked while jogging, and a mysterious woman visits her nephew to tell him a family secret in the opener of the dramatic series following a detective who tracks fairy-tale monsters.