try a semicolon before those hundred chickens squawk in that sentence fragment. :) Comming should be coming, and he sure sits a lot in the beginning of the largest paragraph.
nitpicking aside, he turned off the light just in time! This is full of details that just delve deeper into the mystery, so we HAVE to read on.

Ah, VX. My first thought was “nerve gas” rather than “sixty”, though.