A Company of Killers.

Jody Styles is a detective inspector with the Nottingham city police force, but she and her colleagues have known for many years just how difficult it can be to get a conviction no matter how strong the evidence, something that really pisses them off. They know the accused person is guilty beyond any shadow of doubt, but in court, and with the assistance of some smart arsed lawyer, or an old fart of a judge, who puts a persons life of crime down to them not being breast fed as a child, there is still a very good chance of them escaping justice.
But then one day, and completely out of the blue, she is introduced to a very secret group of people who operate in the shadows above and beyond the law, a place where the police cannot go, and this group have a very different idea as regards to justice and retribution, and maybe one that is right up her street. After much deliberation and soul searching, Jody agrees to join them, but she is tasked with one last case that will not only test her as a detective, but also as a member of the human race.
This crime will show her the full depth of depravity that man has sunk to in his quest to satisfy his lust for money and control, a place where even children are seen as a commodity, no matter what their age.