"It was because of the arrangements made by Nate's parents—my grandparents." Lucas began, his tone unusually serious. "They died in a plane crash, but before that, they'd been investigating what really happened to their granddaughter. They suspected foul play. They kept it from Grace and Nate, though—didn't want to upset them if they were wrong. And..."

He hesitated, his jaw tightening before continuing, "That's when I discovered they'd a hidden clause to their will—one ...