Helen winced a bit at the idea of a rampant zombie on the loose and, worse, someone she liked as much as she liked Major. This would be a...major problem, forgive the pun. They would need to solve it.

"Do we have an idea of what chemical it is in brains they need? Is it a neurotransmitter? Serotonin, norepinephrine, dopamine? Acetylcholine?"