WARNING: SPOILERS! THAT IS ALL!!

Rachel Matheson (Elizabeth Mitchell) and her father Gene Porter (Stephen Collins) determine that the Patriot are spreading the disease deliberately
Miles, Rachel and Monroe return to the cabin to find Charlie and Gene missing. Searching for them they come across the Patriot quarantine camp where they find Gene and Charlie who are helping the Patriots with the incoming patients. Rachel makes her way into the camp while Miles keeps watch from a nearby hill. She finds her father and Charlie. Truman asks her about Miles and Aaron. Gene and Rachel work to help the people of Willoughby. They believe that the disease may not be Typhus. Charlie takes a blood sample from a person who died from the disease and brings it to Rachel. After examining the blood sample, she finds Gene and tells him that the Typhus was created by the Patriots. Meanwhile in Spring City, Ok, Aaron is visited by the nanotech taking the form of Cynthia. Gene and Rachel figure out that the Patriots may have a cure. Miles finds the note left by Rachel asking him and Monroe to find the vaccine. Conner disagrees with the idea. Monroe talks into his son in private about helping Rachel in order to keep Miles on their side. Miles, Monroe and Conner sneak into the quarantine camp and head to the basement of the paper mill that has been cleaned out of all equipment by the Patriots. While tending to patients, Rachel notices that certain people are coming into the camp. Talking with Gene and Charlie, she determines that the people are being targeted by the Patriots. Gene then suddenly collapses.
Later, Rachel finds a letter left by Miles. She tells her father Gene about the letter stating that the storeroom is empty. Truman corners Rachel and asks her about Miles. Miles knocks him out while Conner takes out the other soldier. Aaron and Pricilla head to Texas as asked by the nanites. Miles and Monroe interrogate Truman about the antidote. When he refuses to reveal the information, Miles injects him with the disease. Disguised as a Patriot soldier, Conner walks into Willoughby with Truman who takes him to his office where the antidote is kept in safe. Just as Conner takes out the antidote, Patriot soldiers burst into Truman’s office with guns drawn. In Washington, Neville and Julia meet in a park where Neville tells her that her husband has Jason. Julia questions her husband about Jason’s whereabouts which he keeps secret. Later, she searches through papers and finds Jason’s location. After talking with Julia, Neville arrives at and sneaks into the house where Julia and Doyle are having lunch where he finds Doyle with a gun pointed at Julia’s head and several soldier with guns aimed at him.
“Now here you creeps, punks and freaks
I’m talkin’ ’bout virus from the street
Spread that virus, go for hell
Check out the resistance of your cells ~ “Virus” by KMFDM

Ed Truman (Steven Culp) public enemy #1.

Tom and Julia Neville ( Giancarlo Esposito and Kim Raver) plot against Julia’s husband Victor Doyle