a caribbean mystery be my favorite miss marple novel . it take her to a scenery where you might expect hercule poirot but not our favorite english spinster . the book have many intrigue character and this tv movie keep many of them . you might miss senora de caspearo and who and in the book and get miss marple on the right track with her evil eye superstition . but we have all necessary character who be knit into this mystery which be mostly about adultery and money and murder . they dedicate much screen time to the maid and who be little more than a prop for christie . however and befriend the maid and visit her village and i actually think this be what christie miss marple might do . the voodoo stuff be probably inspire by other christie novel and such a the pale horse or endless night but it use up much screen time which i would have rather dedicate to actually see lucky death . in the book and when they discover her floating corpse and they at first think it be molly  which lead to the conclusion that the murderer might have be mistake and too . that why i give 9 star out of 10. and last but not least some hint for those who might be confuse by user lossowitz comment represent the poison be not administer through pill in a bottle randomly place into palgrave medicine cabinet but in another way which be not disclose in the movie . tim kendall place regular blood pressure pill there afterwards and take advantage of the fact that many people in the hotel believe palgrave have a heart condition . when victoria start to tell people about the pill bottle that have not be in the cabinet before and tim just play cool . he be still safe . even if the police find out that palgrave do not die of natural cause and he could have get away with it . but victoria simply know too much . she know that the bottle belong to greg dyson and that the person who place it into palgrave cabinet must have be either him or somebody who have access to his suite  the hotel manager and for example . victoria confronts dyson and who do not react to her threat because he simply do not do it . victoria do not enlist miss marple help because she do not want the murderer bring to justice and she want money . she probably blackmail tim off screen when he be return the knife . and if you watch the movie carefully and it become obvious that palgrave be not just dig out because of a superfluous pill bottle but on behalf of the doctor who be miss marple ally .