In "The Collectors," David Baldacci's sequel to his New York Times bestseller "The Camel Club," renegade CIA agent Roger Seagraves has set himself up in the business of freelance assassination and treason. The Camel Club, a group of four dysfunctional crime solvers, including a Library of Congress staff member, rises to the challenge after the sudden demise of the head of the Library's Rare Book and Special Collections Division.
Baldacci relied heavily on the staff and resources of the Library when writing his novel. The Preservation Office plays an important role in the plot, along with the "Bay Psalm Book," the earliest (1640) extant book printed in British North America and a key component of the Library's rare book collection.
Unfortunately, you'll have to read the book to see how everything turns out. For a few spoilers, Baldacci's recent lecture at the Library on "The Collectors" is now accessible by webcast.