It’s not often that I like something that whiffs even remotely of horror, but “There Are No Great Truths Here,” by D. T. Friedman suckered me in expertly. A carny barker retrieves small facts from the marks, charging them a nickel each. The reader gets the sense of leaning closer, of a brush with evil, offering enlightenment, but handing out — well, let’s leave that to your darkest imagination.