The Collectors by David Baldacci (2006)

Had to reread this one after listening to Camel Club. My previous post (can't remember how to get to the individual post URL). Even though it is less than 3 years since I first read this, I had forgotten a lot of details. Enjoyed it again, especially as I know the characters better. Looks like Annabelle's story gets completed in the next book. May need to reread that too.