In the upcoming episode titled "The Believer" of NBC's supernatural drama series "Grimm," Nick (David Giuntoli) and Hank (Russell Hornsby) confront an evangelical preacher who transforms into an evil creature and creates chaos.

CLICK HERE to watch how Nick and Hank get a hold of the evil preacher and whether they are successful in capturing it.

Then synopsis of the episode, as stated by, reads:

"An evangelical minister attracts more 'true believers' to his tent revival with the power of his Wesen identity, and Nick and Hank have to get involved when all hell breaks loose. Meanwhile, Capt. Renard (Sasha Roiz) takes further steps to hold sway in local government as Eve (Bitsie Tulloch) borrows a page from Adalind's (Claire Coffee) book to gain more access to Black Claw."

In the promo of the episode, both Nick and Hank can be seen taking down the preacher who, much to the shock of the believers, transforms into a devil-like creature and escaped to Portland.

Elsewhere, after Renard works frantically to ensure that his voters never cease to support him, Eve gets suspicious of his behaviour and starts to keep a close eye on him. She also uses Adalind's tricks to get more information about the Black Claw.

TV Line recently reported NBC has confirmed Season 6 of "Grimm." In a statement, NBC's president Jennifer Salke said: "We absolutely love what our producers and cast have accomplished over the past five seasons. They have created a whole new world of creatures and have a truly devoted fan base. We can't wait to see what comes next."