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Grimm Exclusive First Look: When Bigfoot Meets The Blair Witch Project

Nick's about to get into big trouble — Bigfoot trouble, that is. On Friday's Grimm (9/8c, NBC), Nick (David Giuntoli) begins to investigate a mysterious case in which the suspected Wesen (guest star Kenneth Mitchell) is suffering from a mysterious malady that prevents him from returning to his human form completely. A therapist (guest star Roger Bart) attempts to suppress the creature within. Unfortunately, science isn't quite up to the challenge, and the side effects are appalling.

Hanh Nguyen

Nick's about to get into big trouble — Bigfoot trouble, that is.

On Friday's Grimm (9/8c, NBC), Nick (David Giuntoli) begins to investigate a mysterious case in which the suspected Wesen (guest star Kenneth Mitchell) is suffering from a mysterious malady that prevents him from returning to his human form completely. A therapist (guest star Roger Bart) attempts to suppress the creature within. Unfortunately, science isn't quite up to the challenge, and the side effects are appalling.

From Castle to Grimm: A user's guide to TV procedurals

Nick isn't the only one caught up in the frightening circumstances. Check out this clip of a few amateurs who encounter more than they bargained for out in the field:

Echoes of The Blair Witch Project, right?

Grimm airs Fridays at 9/8c on NBC.