The Naturals (2 Book Series)

From Book 1:
Cassie Hobbes is not like most teenagers.
Most teenagers don't lose their mother in a bloody, unsolved murder.
Most teenagers can't tell who you are, where you're from and how you're likely to behave within moments of meeting you.
And most teenagers don't get chosen to join The Naturals.
Identified by the FBI as uniquely gifted, Cassie is recruited to an elite school where a small number of teens are trained to hone their exceptional abilites.
For Cassie, trying to make friends with the girls, and to figure out the two very different, very hot boys, is challenging enough.
But when a new serial killer strikes and Cassie is drawn into a lethal game of cat and mouse, she realises just how dangerous life in The Naturals could be.