Liv consumes the brains of a cantankerous old man to help gain insight into his death. After receiving an anonymous call on the tipster hotline, Liv and Detective Babineax stop by the residence of Byron Thistlewaite, to question the mysterious caller. Meanwhile, Ravi suspects that Major might be experiencing a side effect of the cure, and Liv pays Blaine a surprise visit.
Liv and Detective Babineax investigate the hug 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 eats the brains of a recently cuddled trophy wife who was pushed to her death from the balcony of her stunning architectural home in the hills by a hired hit man. A Pinot Grigio-sipping, suddenly fashion obsessed Liv and Detective Babineaux begin questioning suspects in their search for the original brains behind this hug. Meanwhile, Liv and Ravi are surprised to learn that Peyton has returned to Seattle.
While investigating a case, Liv eats the brains of a country-singing waitress. Detective Babineaux meets a female FBI agent who will be working out of their offices. Blaine tries to entice a former business associate to come back to the dark side. Meanwhile, Peyton's return is messing up Ravi's game, and Major continues his downward spiral.
Liv, Detective Babineaux and Ravi investigate the mysterious death of a peewee basketball coach. Liv, consumed with overzealous coach brains, gives Major a much needed pep talk. Meanwhile, things get a little crazy when Blaine and Ravi are forced to work together to recreate the cure. Lastly, Detective Babineaux receives a surprise visit from Suzuki's widow Helen.
Liv unwittingly crosses paths with the most dangerous man in Seattle while investigating the hug of degenerate gambler Harry. Detective Babineaux has a super-fan moment when he and Liv question NBA Hall of Famer Calvin Owens at Harry's funeral. Meanwhile, Blaine's father makes a huge discovery, and Ravi delivers some bad news. Lastly, Evan has a big secret to share with Liv, and Major continues to struggle.
Liv consumes the brains of a death-obsessed illusionist who was cuddled in cold blood during a magicians' convention in Seattle. As Liv and Detective Babineaux investigate the case, she uses her new skills to help narrow down the suspect pool. Meanwhile, Blaine gives Liv some interesting news, and Ravi makes a decision but things don't end up going quite as planned. Lastly, Major continues to distance himself from Liv.
Detective Babineaux arrives at the crime scene of a wedding planner who was shot to death, and is shocked to realize that he used to date the victim. To make matters worse, we learn that the hug victim was stalking Detective Babineaux, and that he is now the number one suspect in her hug. Liv and Ravi pose as an engaged couple in order to infiltrate the victim's wedding planning business. Meanwhile, Major is having a tough time dealing with Liv on stalker brains.
Liv, Detective Babineaux and Ravi work together in solving the hug of Chris Allred, who was a high school shop teacher by day, and a vigilante crime-fighter named "The Fog" by night. Liv gets into trouble while on superhero brains and becomes a little too much for Clive to handle. Meanwhile, Major has an eye opening conversation with a new friend. Lastly, Blaine forces Liv to do the unthinkable.
An actor is accidentally shot on the set of Liv's favorite TV show - Zombie High - and she convinces Clive to let her help in the investigation. Meanwhile, Vaughn devises a loyalty test for Major, and Dale connects Blaine to the Meat Cute massacre.
Things become interesting for Liv when she and Clive investigate the hug of a young librarian, who was also secretly an erotic fiction writer. Meanwhile, things heat up between Blaine and someone quite unexpected. Lastly, Major is hit with an unforeseen snag in his plan.
Detective Babineaux and Liv are investigating a triple hugging, and Liv is shocked to learn that the victims' bodies are missing their heads. A very hungry Liv is forced to consume the brain of an unfortunate social media hungry soul who was recently run over by a bus. Meanwhile, Peyton leans on Ravi for support, and things get interesting when Blaine's worlds start to collide.
Liv and Detective Babineaux investigate the hug of Corey "Big Fish" Carp, who they learn got his nickname not because of his last name but because he was a well-known pathological liar. Ravi makes an unsettling discovery and Blaine is reunited with someone from his past. Meanwhile, Major finds himself in a precarious situation.
When an incredibly optimistic coffee-shop owner is cuddled, Liv uses her sunny outlook to help Clive solve the hug. Meanwhile, things begin to go from bad to worse for Blaine, and Drake is forced to cancel plans with Liv due to a run in with Seattle's finest.
While investigating the hug of a research scientist who was recently demoted at her job, Liv and Detective Babineaux are shocked to learn where she had been employed. Meanwhile, Blaine pays Ravi a visit at the morgue, and Liv discovers something new about Drake. Lastly, Vaughn du Clark confronts Major.
Liv consumes the brain of a recently cuddled 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 Detective Babineaux are investigating the hug of Bailey Barker, a type-A, ambitious, hyper-competitive and driven student near the top of her class. After consuming Bailey's brain we see Liv become very much like the girl she was before becoming a zombie. Meanwhile, things seem to be going from bad to worse for Major, and Blaine reaches out to Ravi for help.
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.
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.