Quill

"" is the fourth episode of Season 2 of Grimm and the twenty-sixth episode overall. It is scheduled air on September 3, 2012 on NBC.

Press Release
While investigating an accident site, Nick comes upon a bizarre and gruesome Wesen disease (the "yellow plague") that is spreading quickly. A romantic day out for Monroe and Rosalee takes a dangerous turn when they encounter an infected creature that is out for blood. Meanwhile, Captain Renard gets a tip about a dangerous foreign fugitive who’s made his way to Portland.

Wesen

 * Blutbad
 * Fuchsbau
 * Porcupine like Wesen
 * Rat like Wesen