The Loathing - William H Nelson - Bog

The city was a cesspool of corruption and crime, and Detective Dan Jenkins was heartily sick of it. With so many of his colleagues accepting bribes to look the other way, it was becoming exceedingly difficult for him to continue being an exemplary officer.
But there was something sinister stirring in the slums of his city, a presence swiftly making itself known by committing a string of inexplicable murders. With the bodies piling up and no end in sight to these mysterious deaths, Jenkins must now put aside his deep-seated resentment in order to solve these unspeakable crimes.
Were these seemingly unrelated homicides simply the byproduct of an unrestrained criminal underworld? Or were they something far more diabolical, a grisly series of premeditated executions choreographed by a new cabal of supernatural vigilantes? Now Jenkins would need all of his investigative skills, as well as some unorthodox help, in order to stop the gruesome killings before his city completely crumbled into irreversible chaos.