Dani Berger and Liz Chirac return to Miami from a vacation to discover that their yacht, Vengeance, has been stolen. Then their charter broker calls. She has a client for them. The client refuses to accept any yacht other than Vengeance. The charter is to be a surprise for her lover, who admires classic yachts. Dani and Liz recover Vengeance in time for the charter. But before the guests arrive, they learn that their client plans to use the rendezvous to blackmail her lover.Dani and Liz suspect there's more to this than blackmail. ''Why Vengeance,'' they keep asking themselves. And who is the woman's lover, to justify such a complex effort?Read Bluewater Enigma and you'll find the answers, but don't tell Dani and Liz.