Call me Tori //one direction fanfic

When one direction was almost murdered a girl is brought in to help protect them.
How?

Well Tori isn't just a girl, she's a spy and when her new mission is to pretend to be Liam Payne's girlfriend and take down the killer all seems good right?

Wrong.
You see Tori isn't this girls' real name but the boys and the world don't know that. They are told its to protect Tori's real identity, which is good and all but when one of the boys starts falling for her real personality one she doesn't show often how can he survive when there is no guarantee that she will?!?! Will she leave his mind or always linger?

WARNING: mild swearing and violence. Read at your own risk! PG-13