There are people who live outside the law in every city, every country, around the world. Smugglers and thieves, fences and forgers, bodyguards, hitmen, and more all operate in this shadow economy. They work the gray areas, sometimes for the angels, sometimes for the devils. This is the Underground, where the wicked prey on the powerless, but urban legends spread about those who step in to provide justice when the law cannot. Daniel Brass does not exist. After years as a fugitive from Witness Protection, Brass has set up shop in Boston, searching for answers about the villains who took away his old life in a violent act of arson. But the promise of assistance from a mysterious information broker sets him on the trail of a missing young woman, a woman with no history, no family, and no one looking out for her. Except for Brass. As the search leads him into a complicated web of local politics, secretive detectives, dangerous mercenaries, and criminal enterprises, Brass learns that no one in Boston is quite what they seem, and everyone has something to hide. To turn the tables on the hunters and get out alive, Brass will need every skill he has spent years learning from criminals and victims alike...