Grimm's 100th Episode Will Only Complicate Nick and Adalind's Relationship

NBC's horror series airs its centennial episode on Friday and, in addition to a lot of action and big breakthroughs, it'll have a major effect on the show's current central couple.

Nick (David Giuntoli) and Adalind (Claire Coffee) are still trying to figure out how to define their relationship and feelings for each other in the middle of a war between the uprising wesen in the Black Claw and the government-controlled Hadrian's Wall.

While Nick and Monroe may get lucky in Germany, they'll find that the stakes have only gotten higher at home after someone attempts to assassinate mayoral candidate Andrew Dixon (Michael Sheets).