Means and opportunity coincide when Liv eats the brain of a murdered soldier... and the opportunity to shoot and kill Blaine arises. Meanwhile, Ravi nervously waits to see if the rat bite will turn him into a zombie, and Julien pays Major a visit.

When someone close to Major dies of an apparent suicide, Liv consumes the brains resulting in a mix of reality and paranoia. Clive questions Major and learns of a secret computer file that may contain important details in the investigation – and finding the killer.

Four teenagers hit Sebastian shortly after he becomes a zombie, and he kills one of them. When the body turns up, Liv eats the brain and tries to find out who is responsible. Meanwhile, Ravi and Peyton plan a trip to San Francisco, but Liv gets a visitor who interrupts their plans.