The Elementals

Bran, the Fire elemental, is a fierce, overprotective warrior. 

Alina Cole is a detective on the trail of a serial killer whom she believes killed her parents.

When Bran discovers Alina trapped in a forest fire he is compelled to save her. When her eyes blink open and make eye contact with him, he realizes what she is. Soon he discovers she is hunting the sworn enemies of the Elementals, the Feit.