The Great Bazaar and Other Stories (Demon Cycle, #1.6)

Humanity is nearly extinct after 300 years of hungry demon corelings. A handful of Messengers brave the night between the increasingly isolated populace behind protective wards. Arlen Bales will search anywhere, dare anything, to save the world. Maybe Abban, a merchant in the Great Bazaar of Krasia who purports to sell anything, has the answer.