What Fire Cannot Burn — John Ridley

LAPD'S top mutant-hunter, Soledad O'Roark has outfought telepaths, human flamethrowers, men with steel skin, and every other kind of freakish super-powered thing. But her high-tech firepower is no match for teammate-- and rival--Eddi Aoki's attempts at friendship, which endlessly solitary Soledad. When a vigilante starts killing metanormals without mercy, Soledad and Eddi eend up working the same case... in a way that neither could imagine. And the hunt for answers pits Soledad and Eddi against a cabal inside the LAPD as well as a serial killer who's slaughtering mutants, cops, and anyone else who gets fn his way.