"She's one mean mother." Paula Luna is a typical single parent trying to earn an honest living in San Uvalde. Alluring and edgy, she works her way through her workday amid a sea of incompetent coworkers and lascivious men. But Paula has an alter ego. As a member of a secret U.S. agency, Paula dons her uniform, knives, and a state of the art helmet that assists with her missions (and social networking) and becomes La Lechusa, a master assassin named after a creature of Mexican folklore. When one of her jobs leads to a power play for security contracts among competing corporations at Rexault Pharmaceuticals, La Lechusa is forced to take sides by her shadowy handlers. All the while, Paula has to deal with a mysterious power in two sacred necklaces bestowed by an eccentric neighbor for Paula and her daughter. The necklaces promise protection from impending doom by an "angel negra," black angel. Can Paula Luna maintain a normal life raising a daughter, looking for love, and partying with friends? Will the mystical force help or hinder her clandestine endeavors? Or will the blood on the blades of La Lechusa spell the end for Paula and her family?

An ancient power recharged by greed. It's 1855. Dr. Brewster McGill is a snake oil salesman, trying to make a few dollars on the south Texas countryside. With his trusty helper, Isidro, the two travel the land peddling their remedy. But when a new competitor arrives on his route with a mysterious elixir that not only cures-all but also claims to raise the dead, Dr. McGill is overcome with envy and greed. Plotting to steal away the sinister Aztec relic that is the source of the elixir's power, The Eye of Mictlantecuhtli, McGill and Isidro are thrust into a deadly game of cat and mouse that could curse south Texas forever. Will McGill and Isidro claim the Eye for their own gain and live to tell the tale? Or will death be The Cruel Fate of Dr. Brewster McGill?