Woman in Black

"" will be the twenty-second episode and Season 1 finale of Grimm. It is scheduled to air on May 18, 2012 on NBC.

Synopsis
From Press Release:

As Nick delves deeper into his life as a Grimm, a trail of grotesque murders reignites the search for the elusive gold coins. The arrival of a mysterious woman in black begins to get in the way of Nick and Hank’s investigation as extra precautions have to be taken to ensure their safety. Meanwhile, Nick’s ability to keep his true nature secret from Juliette comes to a tipping point.