"Might as well start from the beginning. The scream drive the psychics mad, or just killed the fortunate ones. Astria is gone, just a big pile of rubble after the psychics were done with it. A bunch of them still live there. Anyway, after the scream people started reporting weird things happening to them. Strange abilities different from the psychics. They've been calling them touched. Touched by the gods, touched by the devil, who knows. This here," he taps the side of his monocle, "let's me see if someone's a psychic. An old psitech trick the academy used to find potential students. Now it tells me who to shoot. And apparently whatever abilities your touch gives you are close enough to psychics to register, though at a different sort of frequency I guess."