Book One in the Kristian Clark and the Agency Trap subseries.
"Kristian Clark, private eye, thought his days as a special agent were behind him, but when he's drafted into action, he finds himself reunited with his old team- and painful memories of why they broke up in the first place. But as he plunges into mission after mission ... Kristian find that everything he tried to leave behind is coming back to haunt him with a vengeance, and then some."