The Collectors By David Baldacci.

The Collectors is a thriller novel written by American author David Baldacci. The book was published by Warner Books on October 17, 2006.[1][2] This is the second installment to feature the Camel Club, a small group of Washington, D.C. civilian misfits led by "Oliver Stone", an ex-Green Beret and a former CIA trained assassin. On November 5, 2006, the novel debuted at No. 2 on The New York Times Best Seller