Who!

Revenge is a dish best served cold. In some cases, dead cold. John Bush, a Houston homicide detective, had spent years trying to stop Joey Elderberry's reign, the legal way. John finally arrested him for murdering three people, but the notorious crime boss walked out of the courtroom laughing. When someone entered a warehouse and killed two of Elderberry's men barehanded, and shot and killed five others, the Houston police called John to find the killers.
As the bodies piled up, so did the pressure. For one reason or another, everyone had one goal, find out WHO!As John investigated, for the first time he began questioning a system where people had to enact their own justice. If he found killers or killer, could he arrest them?