Fox Trap

Lies. Shifters. And space vampires. 
Elly Morgan, an ex-cop-turned-PI, is sent on a mission to catch a serial killer making a blood buffet of her kin, the legendary Seannach. But she's got more than one problem. The Secretive Seannach Council has teamed up with the Ghael Constabulary and sent a Sanguinary—a detective named Blaine Cornell—to chase the killer. What he knows and can't share could get her killed. He's got lies. She's got lies. And the killer has Elly in his crosshairs.
This is the first installment of the Guardians of Ghael urban fantasy series. It's a detective story with a little bit of Dashiell Hammett and a little Cowboy Bebop.