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Evil criminal group Black Claw has come to know the secrets of Nick's (David Giuntoli) family, and are after it. Elsewhere, Trubel (Jacqueline Toboni) finally confronts Eve (Bitsie Tulloch) about Nick and Adalind (Claire Coffee) in the upcoming episode of "Grimm" Season 5, titled "Map of the Seven Knights."

CLICK HERE to watch why Black Claw is after Nick and his ancestry and whether Eve reveals her secrets to Trubal.

The synopsis of the episode reads: "Monroe (Silas Weir Mitchell) receives a call from a relative in Germany that will bring Nick closer to his ancestors. But things get complicated when the nefarious group Black Claw also takes an interest in this discovery.

"Elsewhere, Capt Renard (Sasha Roiz) helps a mayoral candidate gain an edge on his opponent and Trubel confronts Eve about Nick and Adalind."

Black Claw has been after Nick for a long time, and their intentions have not been revealed till now. However, one thing is for sure: They know something about Nick's ancestors, of which Nick has no idea, and they want to find those secrets through Nick.

Elsewhere, after months of research, Trubel is sure Eve is Juliette and she confronts her. Initially denying it, Eve finally admits it and tells Trubel it was she who created problems for Nick and Adalind.

Whether Nick finds the mysterious past of his ancestors will be seen in the next episode.

In the previous episode titled "Star-Crossed," an ancient and barbaric Wesen ritual claimed lives in Portland. Nick, Hank (Russell Hornsby) and Wu (Reggie Lee) started investigating the case but failed to find the whereabouts of the serial killer. Afterwards, Monroe joined them to help with the investigation.

In the meantime, Hadrian's Wall's war against Black Claw intensified as Eve used her unique skills to interrogate a suspect.