Think of the best of the zombie(ish) genre and what do you get?
Small group of survivors, all likeable— or at least believable— enough to root for.
Thrown into a desperate situation where you are genuinely worried about their survival.
Memorable kills and heartbreaking deaths.
And mix in some near-real-world horror about how a government would try and deal with a containment situation.
It’s all in this gem, held together by the endlessly talented and charismatic Timothy Olyphant.