The Walking Dead revealed last week that the virus was spreading through other ways beside walker bites. Two sufferers of the virus, Karen (Melissa Ponzio) and David, wound up dead, burned to a crisp outside by an unknown vigilante.

This week, Tyrese (Chad L. Coleman) continues to grieve for his girlfriend Karen, and to believe that Rick (Andrew Lincoln) and Daryl aren’t doing enough to determine who her killer is. Unable to control his own anger, Rick goes after Tyrese, pummeling him until Daryl pulls him off. Though the glimpse of ruthless Rick proves frightening, he eventually shakes on a truce with Tyrese, who admits they were both wrong but desperately wants to find a cure for the virus, which has recently infected his sister Sasha (Sonequa Martin-Green). Rick promises to investigate his girlfriend’s murder.

At a council meeting, Hershel informs the group that the symptoms of the flu are what are killing their people, not the disease itself. In order to stop the progression of the symptoms, which have made themselves apparent in their Glenn (Steven Yeun), they’re going to need to get their hands on some antibiotics, which Hershel says can be found at a veterinary clinic 50 miles away. Daryl (Norman Reedus) and Michonne (Danai Gurira) volunteer to lead the mission, and eventually decide to take Tyrese and Bob with them.

The council meeting also resulted in the establishment of a set of rules to keep the weaker – younger and older – members of the group in a separate quarantine for their safety. Neither Hershel nor Carl (Chandler Riggs) are predisposed to inaction and idleness and go in search of elderberries, which Hershel says is a natural flu remedy that could stave off the deadly symptoms until the antibiotics arrive. When confronted by his daughter Maggie (Lauren Cohen) and Rick, Hershel explains that he refuses to apologize for risking his life to save lives.

In the car on the supply run with Michonne, Tyrese and Bob, Daryl gets distracted by a voice on the radio and runs the vehicle directly into a a massive herd of walkers. Upon realizing there was no way to drive out of the mess, Daryl and Michonne get out of the car and begin firing their weapons, trying to help Tyrese and Bob make a run for it. Tyrese’s dawdling almost gets them all killed, but miraculously they all make it to safety.

Meanwhile, Rick is making good on his promise to Tyrese to figure out who took it upon themself to kill Karen and David. Evidence leads him to Carol (Melissa McBride), who has time and again proven her loyalty to the group following her daughter’s unfortunate demise. When Rick confronts her, Carol admits her guilt.

The Walking Dead airs Sundays on AMC at 9/8c.

– Chelsea Regan

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For More 'The Walking Dead' News:

‘The Walking Dead’ Recap: Zombie Virus Threat Grows; Rick & Carl Rearm Themselves

‘The Walking Dead’ Premiere Recap: Rick Questions His Humanity; A Walker Is Born In The Prison

‘The Walking Dead’ Premiere Spoilers: The Governor Will Return; Rick & His Group Try To Hold Onto Their Humanity

‘The Walking Dead’ To Get A Spinoff Series

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