Milo Weaver trilogy

Now faced with the end of his quiet, settled life, reluctant spy Milo Weaver has no choice but to turn back to his old job as a 'tourist.' Before he can get back to the CIA's dirty work, he has to prove his loyalty to his new bosses, who know little of Milo's background and less about who is really pulling the strings in the government above the Department of Tourism--or in the outside world, which is beginning to believe the legend of its existence....

"In An American Spy, reluctant CIA agent Milo Weaver thought he had finally put "Tourists"-CIA-trained assassins-to bed. A decade later, Milo is hiding out in Western Sahara when a young CIA analyst arrives to question him about a series of suspicious deaths and terrorist chatter linked to him. Their conversation is soon interrupted by a new breed of Tourists intent on killing them both, forcing them to run. As he tells his story, Milo is joined by...