Taking Care of Business - The Business Trilogy, #1

In a city on edge and in fear of a crazed serial killer that stalks the streets, two debauched and out-of-control drug dealers have a very long day after one of them accidentally kills a local gangster and customer. The body of the feared villain starts a domino effect of accidents, suicides, overdoses and multiple murders that are dealt with through a haze of chemicals, hallucinations and bad decisions.
But when what you do is illegal, does it matter how far you break the law?