The Magician's Mistake (The Fay Morgan Chronicles Book 1)
In the first novella in The Fay Morgan Chronicles, after centuries of wreaking chaos on the world, Morgan le Fay now lives a mundane life in Seattle. She tends to her Wiccan shop, keeps an eye out on the city's supernatural denizens, and tries not to care that so many of her memories are faded and tattered. Just a fact of immortality, she thinks, along with the endless and steady boredom of life.
But then two men stumble through her door. The first is a werewolf. The second? He seems familiar, though she has no memories of him.
Soon Morgan is dragged into a mystery surrounding a lost amulet, trolls, and a mysterious witch hell-bent on revenge who doesn't care if she hurts Morgan or any of her friends. As if that weren't bad enough, the man she has no memories of is completely charming but seems incapable of telling the truth about anything.
The Magician's Mistake is part of an urban fantasy series. Fans of The Dresden Files and The Lily Harper Series should enjoy this series.