A woman docks a yacht in a Caribbean port, claiming her husband had a heart attack and she buried him at sea. The authorities note the $12-million insurance policy and charge her with murder. Vacationing lawyer Stone Barrington, whose girlfriend is away, comes to her aid.

"While investigating a toxic outbreak in the Caribbean Sea that may ultimately threaten the United States, Pitt unwittingly becomes involved in something even more dangerous -- a post-Castro power struggle for the control of Cuba. Meanwhile, Pitt's children, marine engineer Dirk and oceanographer Summer, are on an investigation of their own, chasing an Aztec stone that may reveal the whereabouts of a vast historical Aztec treasure. The problem is,...