Adalind returns to wreak havoc as she avenges her mother's death; Capt. Renard's obsession escalates; Monroe receives a surprise visit.
Hank remembers an arrest he made earlier in his career when a man claimed he committed murder in self-defense against monsters; Monroe gets involved in an unexpected situation.
Nick deals with the consequences of learning the truth about Juliette and Capt. Renard; Nick must investigate his own crime; Wu responds to a shooting at Nick's house.