A bizarre double homicide leads Nick and Hank to a boxing gym, which Nick discovers is a supplier for a darker, ritualistic fight club in the creature world. When Monroe lends a hand and gets in over his head, Nick must dig deep and find his inner “Grimm” to defend him.
Elenco: David Giuntoli , Silas Weir Mitchell , Bitsie Tulloch , Russell Hornsby , Bree Turner , Sasha Roiz , Claire Coffee , Reggie Lee , Reggie Lee , Sasha Roiz .