Isabelle Grace (known to friends and enemies as Izzy) has been hunting demons and things that go bump in the night for twelve years; seven years longer than the average Hunter. She is also one of the last demon hunters in the Los Angeles area. She wants to resign so she can live the life of a normal grad student but there are demons that have begun to call her Gate Keeper. What is a Gate Keeper? Why is she being called that? Who is this demon that started the name calling in the first place, and why won't he leave her alone? And why is her past coming back to haunt her? She must figure this out while at the same time she must keep up her grades in grad school, deal with an overly cheerful and persistent classmate, and convince a priest who insists that she can't quit that really, she can.