Clare and the Desert Artifact

Clare Alexander Menderman is a fulltime horticulturist and reclusive wonder worker. She reluctantly accepts an assignment that involves travel, unaware that she will soon be exposed to a malevolent god and its slave sorcerer.
After thousands of years, Seta Amun has emerged from the depths of the earth once again, going on a rampage of destruction and terrorizing the small city of Mydyn Lyxinat. It's only a matter of time before his full strength takes hold.
Seta Amun's sorcerer possesses an Egyptian thief, transforming and forcing him to lure people into a lair of dark magic and death. Clare has no idea what's in store for her but suspects the strange death of one of her students is a dire clue.