I read a lot of science, and to me it’s scarier if the horror is backed up by believable science because then it’s part of our world as opposed to something that’s so outré that it’s not a part of our world, it’s not connected to us. It’s not that I don’t like those other kinds of fictions—I read them. But for me as a writer, I want to tell something that would scare me. I’m not scared of supernatural monsters. I am frightened of a bacterial or bio-weapon that is misused, so I write what scares me.