Lethal Magic - La série

I'm Natasha. Friends call me Tash. The world calls me troublemaker. No one knows I possess a deadly magic. It was supposed to be a simple surveillance job, just like the zillion others I had run for my tough-guy benefactor, Tobias. An hour into it, I'm sitting with a dead body after barely surviving a warlock's rampage. I thought things couldn't get any worse, but what did I know? Running point for Tobias or being witness to a murder was the least of my worries. Now I've been blackmailed into working with paranormal cop Ian, and I must help him find what the warlock is up to before he destroys whatever is left of our world. Piece of cake, right? Sure, if you ignored the dark magic I was born with. I just might save the world from a warlock's evil plans, but can I save it from the darkness that lies within me?