Mercedes Lackey is the author of Burning Water (1989), Storm Warning, Apex (Hunter), The Sleeping Beauty, The Outstretched Shadow, Exile's Honor and , Hunter.
In Mercedes Lackey's Burning Water, a sexy witch who writes romances and a police detective who sees more than mortal man team up to battle an ancient Aztec god!
Dallas Police Detective Mark Valdez isn't just any cop, he's a psychic who knows that the cattle mutilations and torture murders he's been investigating are somehow tied together. He also knows that his meager psychic abilities aren't enough to identify the killers, much less stop them.
Luckily, Mark has an ace up his sleeve: an attractive young romance novelist who happens to be a practicing witch. And not just any witch, either--Diana Tregarde is a Guardian, charged with protecting the Earth and all its creatures. Using modern science and ancient magics, Diana and Mark discover that they are tailing no ordinary serial killer but the awakened avatar of an Aztec god. Tezcatlipoca and his four beautiful handmaidens are preparing for a great sacrifice that will transform North America into a new Aztec realm.
Diana isn't sure her powers are strong enough to take on those of a risen Aztec god, but she has no choice. As a Guardian, she is sworn to protect mankind, even at the cost of her own life. Luckily, she does not stand alone. Mark Valdez is more than just a cop. And Tezcatlipoca is not the only Aztec god walking in the world.
The Outstretched Shadow, the first book in The Obsidian Trilogy from Mercedes Lackey and James Mallory
Kellen Tavadon, son of the Arch-Mage Lycaelon, thought he knew the way the world worked. His father, leading the wise and benevolent Council of Mages, protected and guided the citizens of the Golden City of the Bells. Young Mages in training--all men, for women were unfit to practice magic--memorized the intricate details of High Magic and aspired to seats on the council.
Then he found the forbidden Books of Wild Magic--or did they find him? Their Magic felt like a living thing, guided by the hearts and minds of those who practiced it and benefited from it. Questioning everything he has known, Kellen discovers too many of the City's dark secrets. Banished, with the Outlaw Hunt on his heels, Kellen invokes Wild Magic--and finds himself running for his life with a unicorn at his side.
Rescued by a unicorn, healed by a female Wild Mage who knows more about Kellen than anyone outside the City should, meeting Elven royalty and Elven warriors, and plunged into a world full of magical beings--Kellen both revels in and fears his new freedom.
The one thing all the Mages of the City agreed on was that practicing Wild Magic corrupted a Mage. Turned him into a Demon. Would that be Kellen's fate?
Deep in Obsidian Mountain, the Demons are waiting. Since their defeat in the last great War, they've been biding their time, sowing the seeds of distrust and discontent between their human and Elven enemies. Very soon now, when the Demons rise to make war, there will be no alliance between High and Wild Magic to stand against them. And then all the world will belong to the Endarkened.