"Grimm" Season 4, Episode 8, titled "Chupacabra," is the next new episode of the NBC drama. It airs Friday, Dec. 12. Agent Wu's curiosity is one of the highlights of this episode. Meanwhile, Nick and Hank are back to dealing with Wesens without Truble's assistance.

Spoiler alert: This update contains Grimm Season 4 spoilers. Read at your own risk if you have not watched the previous episodes.

"Nick and Hank find themselves investigating the gruesome trail left behind by a blood-sucking creature known as the chupacabra, which was brought to Portland by an unsuspecting traveler," reads the first part of the Grimm Season 4, Episode 8 synopsis on TV.com.

Since Nick's Grimm powers are back, he and Hank are expected to get back to their ways of beating Wesens without Trubel's help. Would Agent Wu offer some (upgraded) help? (Trubel has gone off to Philadelphia with Josh Porter, who may or may not develop Grimm abilities like his late father.)

Josh and Trubel are driving Aunt Marie's trailer now, thanks to Nick's generosity. Together, they want to face the Hundjägers who are hunting Josh to get the mysterious keys entrusted to Nick. It is possible Grimm Season 4 would see their return. After all, FBI Special Agent Chavez would come looking for Trubel.

Meanwhile, as far as Captain Renard is concerned, Nick could tell Wu whatever he wants, as long as the captain is left out of the story. Wu has been trying to get Nick to sit down and talk to him about Trubel. Grimm Season 4, Episode 8 is possibly about Wu's long wait.

"Wu prepares to confront Nick about what he has been seeing," says the final line in the episode synopsis of Grimm Season 4, Episode 8.

In other news, Monroe and Rosalee are finally set for their honeymoon. Will the Wesens who against their interracial marriage cause more trouble?

Everyone's going on trips at Grimm. Viktor and Adalind are also leaving Vienna. They have deduced that Nick's mom Kelly has Adalind's baby. What they don't know is that Captain Renard's mother Elizabeth knows the same thing now. Avid followers could expect major cliffhangers in Grimm Season 4, Episode 8.

Grimm Season 4's rating dropped to a series low Friday, according to a report on Zap2It.com. The next new episode could show whether Agent Wu's deeper involvement in Nick's life as a Grimm would turn things around for the viewers.

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