''Every time you use magic, it uses you back. Sure, you could magic yourself a photographic memory for that big test, for that big interview, for that big stock market job. And all it cost you was a nice case of liver failure. Or the memory of your lover''s name.''

Magic is Allison Beckstom''s blessing and curse. As a Hound, she uses her gifts to track down practitioners who abuse their power, and then stops them from inflicting harm on unsuspecting innocents. Unfortunately her spells have taken a toll on her, physically marking her and erasing her memories - including those of the man she loves.

But lost memories aren''t the only things preying on Allie''s thoughts. Her late father, a prominent businessman - and sorcerer - has somehow channeled himself into her mind. With the help of the Authority, a secret organization of magic users, she hopes to gain better control over her own abilities - and find a way to deal with her father . . .