iZombie (2015)

S1E12 Dead Rat, Live Rat, Brown Rat, White Rat

After Sebastian transforms into a zombie, he attacks four teenagers, resulting in one of their deaths. When the victim's body is discovered, Liv consumes the brain to uncover the truth behind the incident. Meanwhile, Ravi and Peyton are gearing up for a trip to San Francisco, but their plans are unexpectedly disrupted when Liv receives an unexpected visitor.