The deadly Princess

There's the first one.
At day, he's the cute bluenette teacher loved by all his students, always wearing a smile and helping everyone.
At night, he wears a wig, some lenses and high heels and is the well-known "Princess", a terrible assassin that only kills powerful mans all around the world and loves, oh he really loves, to make them feel inferiority.

And then there's the second one.
A redhead who always feel like justice needs to be done.
He's the really intelligent new member of the FBI.
And when he learns the death of a minister, killed by the sadly famous Princess, he can't help but take the case under his responsability -even if he's new, even if nobody else want to help and even if everyone say he's crazy, maybe he is-.

And so, these two will cross path, the first one trying to keep his identity a secret, the second one trying to figure out who he is.

What will come out of this?