the murder vacation

A young private investigator named Linda graverson is given a letter by somehody anonymously.The letter,that Linda read,was saying that she had won, a one week vacation to a beach resort on a luxurious island.She found this really suspicious but ,because she was tired and it was summer.She went anyways.What she didnt know was that in this island a series of murders were going to take place, and she would have to find and catch the killer before its too late..