Chaos overtakes the fort when one of Howie's group turns and starts
killing survivors. Howie and his team are blamed and shunned but carry
on their search for fuel to run generators in order to carry out
research on the dog.
When Marcy realises the infection can cure diseases, and realising she
can be strong and good, she decides to head to the fort to hand herself
in to be examined, too. Howie is only partially convinced of her good
intent, and, despite their hatred of one another, there is an undeniably
strong connection between them.
Meanwhile, inmates inside a prison start killing each other, and
Fletcher, an ex-power-lifter, is turned, becoming the most evil undead
yet known.