Big Feet

"" is be the twenty-first episode of Season 1 of Grimm. It first aired on May 11, 2012 on NBC.

Synopsis
From Press Release:

After Juliette stumbles upon a brutal murder, Nick learns the suspected creature, and friend of Monroe, is suffering from a mysterious condition -- the inability to completely return to human form. This mysterious condition leads them to a therapist who’s created an artificial drug to suppress the creature side, with horrifying side effects. Meanwhile, the investigation takes a surprising turn when Hank sees something he can't quite explain.

Grimms and Creatures

 * Hank sees Monroe as a Blutbad.
 * As Constantine Brinkerhof dies, Hank sees him retract from his Wildermann state.
 * Appearances
 * Wildermann
 * Blutbad