12 Monkeys is a troubling 1st choice

Rating: 10/10 (24 March 2014)

I'll stick to one topic, that is, the deliberate poisoning of human civilization by one person.
Many viruses may take 7 or 10 days for the first symptoms to appear. In this time a virus could travel around the world, several times, by jet aircraft without a single airline passenger aware of their fate.
A virus, specific to humans or a few other species, could be devastating. Several different viruses released at the same time would overwhelm any health care system. Most people wouldn't know they were under attack at any time.
This is very real. The aum shumriko cult in Japan. The raelians. A microbiology laboratory would cost millions, and they have that money.
Or a lone researcher at Fort Detrick, Maryland, obsessed with some sorority girls.
It doesn't have to make sense.
There are some very bright virologists that have never had a date.