But first…
A Rick Grimes connection?
Lets just say this walker will open a universe of possibilities for our storytelling.
Daniel, however, refuses to rent out his plane.

Credit: Ryan Green/AMC
He says every time Victor tries to help, he always ends up making things worse.
After all, trying to help his friends is something he mentioned to Daniel before the dam exploded.
Its a woman inside a hazmat suit.

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But Alicia tackles her to the ground.
Disarmed, the woman reveals her name is Grace and she fears Morgan may have been contaminated.
We soon learn that Grace was an operations manager at close-by plant containing two pressurized water reactors.

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If any human kills one, they could risk being exposed to the radiation.
A brief encounter with an oncoming herd leaves Alicia shaken.
They find a cabin boarded up and inside are walkers.
Outside, having heard Alicias warning over the walkie about radioactive walkers, they find a pile of ash.
Grace told Morgan and Alicia there were 63 more radioactive walkers out and about that she needed to find.
Well, this pile of bodies were from about half of them.
The dead inside the cabin had been exposed to said particles and died.
She was given Johns pistol as her defense, but it doesnt prove to be super useful.
As shes speaking with Victor over the radio, she hears something outside.
When she comes to, the others have returned but the walkers arent there anymore.