The dogs of Rome : a Commissario Alec Blume novel / Conor Fitzgerald.

Enhanced descriptions from Syndetics:

On a hot summer morning, Arturo Clemente is sloppily murdered in his Roman apartment by a mysterious slasher. When his wife, an eminent politician, finds his body, she swiftly springs into action--by calling the Ministry of the Interior.

By the time police inspector Alec Blume arrives at the scene, evidence has been collected, command taken, and, in short--his investigation has been compromised. As the details of the case continue to trickle out, Blume soon realizes he is being watched from on high--and that solving this crime may be the least of his worries. Losing sleep and unsure who to trust, Blume feels the case spinning out of control: does anyone involved even want justice? At what price will it come? And who runs this town--the police, the politicians, or organized criminals?

In this riveting novel, we are introduced to Blume, an American expatriate and seasoned police veteran. Intelligent yet sometimes petulant, instinctive yet flawed, Blume is a likeable and trustworthy protagonist for this, the first installment of a gritty and promising series.