The Negotiator — Brendan DuBois

The Negotiator has built a good business around his talent for facilitating the sale of valuable merchandise with no questions asked. He relies on his other talent―the ability to shoot his way out of trouble if a deal goes sideways―as little as possible. Over the years, he's learned that the best way to avoid gunplay is to always be smart, trust no one, and never agree to meet clients in a private residence.

When the promise of an enormous payday convinces him to break the most important rule, his partner Clarence is killed and the Negotiator is left with a new job description―figure out who killed Clarence and be sure that justice is served by any means necessary.