Greed by C. M. Sutter

Washburn County Deputy Amber Monroe is following in the footsteps of her sister, Jade, in hopes of being promoted soon.
Living in small-town USA has its advantages, like a sense of security, and disadvantages, like being close to Milwaukee and its crime. Washburn County has become the dumping ground of murder victims, courtesy of its neighboring county to the south.
When two men are discovered on the outskirts of North Bend, each with a bullet to the head, Amber’s team, led by Lieutenant Jack Steele, hits the highway in search of a killer.
Assisted by the Milwaukee PD, they go deep into Brew City’s underbelly. Crimes involving murder and counterfeiting keep the team running in every direction, but it’s Amber’s attraction to a new man in North Bend that puts her front and center on the killer’s short list.
She doesn’t get far before the entire case turns upside down.