Harry Gorden investigates both his girlfriend’s and her daughter’s burglaries. He finds a pearl choker, survives a rigged pistol, and a car-bomb. Surely the two break-ins are connected. Diamond expert King discovers the fake pearls contain 210 ancient diamonds worth $25 million, possibly The Diamonds of Medina? Greedy Bobby Green engineered the diamonds’ theft from Mohammed’s shrine, entrusting attorney David Michaels with the choker, which David hides in Bobby’s ex-wife’s dresser. They plan to return the diamonds to Saudi-Arabia’s Emir for $50million, then offer the Emir’s grandson for $250 million. Complex shenanigans, schemes, worthless letters of credit, then kidnaping, and confrontation play out on Grand Cayman Island.