Al tropico del cancro
While vacationing in Haiti with his wife Grace, Fred Wright decides to make an impromptu visit on an old friend, Williams, a doctor. Fred’s motives are not entirely pure, however, with it soon emerging that he is one of various parties interested in a new wonder drug that Williams has developed, some of whom will stop at nothing – including murder – to secure it for themselves.:The first complication is that the idealistic Williams appears to have no interest in selling the drug, regardless of the price… The second complication is that the drug, the sample of which has gone missing, may in any case also have potentially fatal side effects for those who take it, with one of Williams’s native assistants turning up dead soon afterwards, his blood being almost like water in its appearance and chemical composition…