Cuba straits

Doc Ford's old friend General Juan Garcia is feasting on profits made by buying historical treasures for pennies on the dollar but when he manages to obtain a collection of letters written by Fidel Castro it's not a matter of money anymore. Garcia has stumbled way out of his depth. First Garcia and then the man to whom he sold the letters disappears. When Doc Ford begins to investigate he soon becomes convinced that those letters contain a secret that someone or some powerful agency cannot allow to be made public.