Stone cold, by David Baldacci

Uncovering the hidden, secret work of the government is what Oliver Stone and the Camel Club are committed to. New honorary member Annabelle Conroy was last seen in The Collectors, when she swindled $40 million from the guy who murdered her mother; he's after her now. The Camel Club also has to protect Oliver from Harry Finn; Oliver has secrets about Finn that Finn will kill to keep from becoming public. Suspense drama at its best.