Horror movie scenario: It sounds like something out of a Steven King or Alfred Hitchcock thriller. Killer hornets have attacked more than 1,500 people in China this year, killing 42 of them. These are big bugs, some of them nearly the size of your thumb. They attack in swarms, even chase their victims. Their venom is deadly, if the victim is stung enough times. Oh yes, to top things off, their stings rot holes in flesh. Folks in the region are hoping for an early winter to put them out of commission.