Once again, Vince hopes for a normal life while Cat can't help waiting for another Beast case, despite Tess's selfish wining about her captain career and assigning Cat a rookie as new NYPD partner. J.T. takes painfully risks in an attempt to find an antidote for the serum, fearing his growing powers might ultimately turn him into a beast. Cat is convinced to spot fake Home Security agent Carol, but can't pin her down, while indeed she and Bob are hell-bet on redeeming themselves for the failed double assassination by testing Vince, separated from Cat, as ideal guinea pig Beast. Vince is lured into tracking down and saving innocent Eddie Daniels, then darts-tranquilized, J.T. finds him and resorts to a desperate risk.