From publisher blurb:
Under a sky of blue, lies our vibrant world, where life blossoms in the green spring, or lays in repose in red autumn. But beneath the green, beneath the red, lies the cold, hard ground. Here the roots of things cut the earth, devouring what it holds. Small creatures dig and burrow and worms grow fat on the still dirt. Deeper still lie subterranean worlds, caves, where rock crawls upon spirals of time, creeping from pools of quiet that lap the shores of darkness. And beyond the darkness, beyond all sense, lies a gulf of empty fear, where our demons lurk.
Born with twisted thought, tainted with stains of malice, these are creatures unkempt. Foul of sight and smell, sunk in the darkness of the time's caverns, the dwell in an abyss, in hell, in the Wretched Plaines of shadow and loss. These are the demons. These are the devils.