American Vampire: v.2 by Scott Snyder
Circa 1935, in just a few short years, young police Chief Cash McCogan has watched his native city of Las Vegas go from cow-town to wild, glittering boomtown. And when the bodies of businessmen start showing up drained of blood, Chief McCogan faces a threat much darker than anything he could have imagined...and the only sure bet is that Skinner and Pearl are right in the thick of it.