Marolyn Caldwell 
The Diamond [EPUB ebook] 
Book 2

What do you do if the bad guys in your life grab you to get back a priceless diamond—which, by the way, you don’t have—and they’re willing to kidnap, torture, and/or kill to obtain it? After you make your escape, you help devise—with the assistance of the most devious people you know—a totally improbable plan to reproduce the lost treasure. Then you get really sneaky!

Lorie and Jeff Preston and their devious friends go full tilt at the Blackheart Compact in the follow-up to Battle of Wills.