When a Wesen madman named Silvio forces Nick to help him wage a personalvendetta against a shadowy group that has existed since the dawn of man, Nickfinds everything he holds dear caught in the crosshairs. But Silvio's trueintentions are not what they seem and the very fate of the world may hang in thebalance. This is the can't-miss conclusion to the Grimm comicseries Collects issues #6-12.