Working together on a mission, Liv, Detective Babineaux and Major crash Vaughn’s Super Max Rager party, where Rob Thomas performs a song from his solo career. Meanwhile, Blaine reaches out to Peyton for help, which does not sit well with Ravi.

Liv and Ravi are in need of help and find an unlikely ally in Blaine. Detective Babineaux and Dale Bozzio pursue a new lead on an old case. Meanwhile, when Major finds himself in a world of trouble, sleazebag Brant Stone comes to his rescue. Vaughn’s evil side reaches a whole new level of mean.

As Liv and Clive try to track down Cameron and determine his connection to Max Rager, Blaine interrogates Major about the missing brains.

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.

Liv uncovers the shocking truth about the virus and the far-reaching consequences of the vaccine. Majors exams his future as a human. Blaine makes a business proposal.

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.

When Liv consumes the brains of a dominatrix, her bossy and controlling personality makes everyone a little uncomfortable, especially Clive. Meanwhile, Blaine and Peyton have a heart-to-heart.

While Liv and Clive investigate the murder of a coffee shop owner with an extremely sunny outlook on life, Ravi tests the new cure on a rat before administering it to Major. Meanwhile, Boss discovers who has been moving in on his turf.

When Liv consumes the brains of someone from Ravi's past, not only does it have her wanting to sleep with every guy in Seattle, she also begins having some very intimate visions of Ravi. Meanwhile, Major is faced with a huge decision.

The outside world further isolates Seattle while Peyton, Ravi, Clive and Major race to save Liv from execution for her work as Renegade.

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.

A librarian is murdered and the investigation soon reveals that she was going to release her first erotic novel. Meanwhile, Peyton is forced to step in when Clive and Dale arrest Blaine for murder, and Major is forced to give up his dog.

After a scientist is murdered, Liv and Babineaux are surprised to learn where she worked; Ravi gets a visit from Blaine at the morgue; Liv finds out something about Drake; Major is confronted by Vaughn du Clarke.

Liv consumes the brain of a recently murdered stripper and uncovers some extremely useful information. Meanwhile, Blaine isn’t quite himself lately, and Ravi makes a startling discovery. Lastly, Major and Ravi are helping Peyton move back in with Liv when she receives a surprising phone call.

Liv and Babineaux investigate the death of a highly competitive student; Liv becomes more like the girl she used to be after consuming the victim's brain; Blaine looks to Ravi for help.

While Major faces a changing of the tide in Seattle, Liv, Clive and Ravi undertake a mission impossible in Atlanta to retrieve the final zombie cure.

When Liv, Clive and Ravi arrive at the scene to investigate a fatal car accident, they begin to suspect foul play was involved. Both starving, Liv and Major consume the brains of the accident victims, a well-meaning father and his angsty teenage daughter. Meanwhile, when Clive is brought in for questioning about a family that was murdered, he’s forced to reveal his past history with them. Lastly, Peyton extends an olive branch to Ravi, and Major hits a road block in his search for Natalie.

When a Dungeon Master is killed, Liv and Clive discover he was up to more than just playing in his mother's basement. Meanwhile, Blaine's experiment does not go as planned. Lastly, Ravi stumbles across some new information that could prove deadly.

Liv does Clive a solid and agrees to consume germaphobe brain during flu season. Ravi continues his role as surrogate father to Isobel. Major finally gets to the bottom of things, and Chase continues to spiral out of control. Lastly, Peyton struggles with a very important decision.

As Liv, Ravi and Clive race to finalize the cure, Peyton faces a showdown with Blaine, and Major takes a bold gamble to save Seattle once and for all.

Liv and Detective Babineax investigate the murder of a hard-partying frat boy whose death shocks everyone. After consuming his brains, Liv attends a fraternity party in an attempt to search for clues, but ends up ruling the beer pong table instead. Still desperate to find the cure, Ravi takes matters into his own hands and brings Major along for the ride. Meanwhile, Blaine meets with Angus, a mysterious person from his past.

Liv is called in on the case of a shop teacher who pursues criminals at night as a costumed vigilante... and turns up dead. Meanwhile, Major makes the acquaintance of a new zombie.

Peyton and Liv find themselves on a surprising wild goose chase. Ravi is terrified when the zombie truth hunters' plans are revealed. Elsewhere, Major finds comfort in an unexpected - and perhaps unwelcome - friend.

Liv and Blaine come to the rescue of one of their own. They consume the brains of a conspiracy theorist and paranoia ensues. Meanwhile, as they continue to search for conspiracy theories that may or may not exist, Liv researches Major's new friend. Finally, Ravi makes a surprising discovery of his own.

Medical resident Liv Moore becomes a zombie and loses her ambition until she begins working at the city morgue to gain access to brains that give her sustenance and allow her to maintain her humanity. She also learns that her new diet enables her to experience a victim's memories that can be used to help solve the person's murder.