If you want something that looks like a book, Angry Robot has a sample of Servant of the Underworld to download, which contains the first chapter. Available in Mobipocket, EPUB or PDF.
In the silence of the shrine, I bowed to the corpse on the altar: a minor member of the Imperial Family, who had died in a boating accident on Lake Texcoco. My priests had bandaged the gaping wound on his forehead and smoothed the wrinkled skin as best as they could; they had dressed him with scraps of many-coloured cotton and threaded a jade bead through his lips – preparing him for the long journey ahead. As High Priest for the Dead, it was now my responsibility to ease his passage into Mictlan, the underworld.
I slashed my earlobes and drew thorns through the wounds, collecting the dripping blood in a bowl, and started a litany for the Dead.