who is zach??

Zach is a spy boy introduced in book 2 as an exchange student from black thorn academy.
He met Cammie while on a CovOps trip in Washington D.C.
After meeting, the sparks were flying, I don't want to give any zaidi spoilers but he continues to make (hot) appearances through out the rest of the series.

Zack is a boy spy/assassin from Blackthorn Institute for Boys. And him and Cam start dating