Ep 1. Thanks for the Memories

Nick Burkhardt is a police officer who can see into the hidden world of fairytale creatures, and his responsibilities have only gotten more complicated in Grimm season 4 episode 1, Thanks for the Memories. After the murder of his mother and the apparent betrayal of his girlfriend Juliette, Nick has found himself struggling to maintain his sanity and his grip on the two separate worlds that he inhabits.

At the start of this episode, Nick is in a state of shock, barely able to function. He's back at home, but his house is empty and his memories are fractured and out of order. He sees glimpses of his time with Juliette, but they're jumbled and distorted, and he can't seem to make sense of anything.

To make matters worse, Nick's Grimm powers are also acting up. He can sense the presence of wesen (fairytale creatures) all around him, but he can't see them clearly or control his reactions to them. This makes him a danger to himself and to others, so his friends and fellow cops, Hank and Wu, are keeping a close eye on him.

Meanwhile, Juliette is struggling with her own issues. After she was almost killed in a confrontation with one of Nick's enemies, she was given a strange potion that seems to have caused her to develop wesen powers of her own. She's not happy about it, but she's also not sure how to control or understand her new abilities.

As the episode progresses, Nick starts to piece some things together. He realizes that his memories are being manipulated by a wesen who can extract and alter them at will. He also learns that there's a new villain in town, a mysterious figure named the Wesenrein who is targeting wesen and humans who have "impure" bloodlines.

Nick and his friends are drawn into a dangerous game of cat and mouse with the Wesenrein, and they must use all their resources to stay one step ahead of the extremist group. At the same time, Nick is faced with a difficult decision about what to do with Juliette, who is struggling with her new wesen powers and the guilt of her past actions.

Thanks for the Memories is a tense, action-packed episode that sets the stage for the rest of the season. As Nick and his friends struggle to unravel the conspiracy against them, they're forced to confront their own fears and prejudices in order to survive. With new villains and unexpected twists around every corner, this season promises to be a wild ride for fans of Grimm.