When Annie Dawson finds a necklace, earrings and a matching hair comb in the attic of Grey Gables, she doesn't realize the chain of events waiting to be unleashed. Why are so many people—from the ocean scientists studying Stony Point's fishing industry to a rich, young philanthropist to Annie's best friend's ex-husband—so fascinated by the jewelry. It all seems innocent at first, but then someone snatches the decorative faux-emerald comb from Annie's hair during a brief blackout at a masquerade ball. Is someone masquerading as a thief—or worse?