Nicole Helm 
HUNTING KILLER_TACTICAL CR4 EB [EPUB ebook] 

The Tactical Crime Division’s in hot pursuit When K-9 handler Serena Lopez discovers that her half-brother’s a fugitive from justice, she must find him. It”s a good thing that her partner is infuriatingly efficient lead agent Axel Morrow. But it’s a race against time to catch the armed-and-dangerous criminals before they kill again… with the Serena and Axel as their targets!