" Koturovic somehow came up with the idea there were some kind of creatures—big, smart, scary alpha predators—living in these higher dimensions. Telepathically-sensitive people sensed them all through history and that’s where all our myths about demons and monsters come from. It’s their presence leaking through. When the dimensional barriers were shattered, according to him, these things would come through and eat everything they could until the barriers reasserted themselves. Kind of the universe’s method of population control. "
― Peter Clines , 14 (Threshold, #1)