Jane gets the CBI involved in a case in Napa in order to focus on Sheriff McAllister, while Van Pelt and Rigsby finally take a trip down the aisle and get married.
Nick and Hank are called when a victim appears to have died from clay-induced asphyxiation; Wu grows more suspicious of Trubel's presence.
A woman's delusions drive her to commit a deadly crime; the threats against Monroe and Rosalee's inter-wesen marriage heat up.
An unforgettable Wesen sets his sights on Trubel; Nick weighs whether or not he should regain his Grimm abilities.
After Nick has a bizarre, unsettling vision, he and Hank find themselves on a case that takes them into the world of boxing.