I'm not sure what the other reviews are doing on this page but they are certainly miscatalogued. This certainly isn't a 1980s video nasty called "Island of Death" but a TV video nice made in 1996 starring the delectable Keri Russell ("The Waitress") in a very early role (she was 19 at the time) as a high-school student implicated in a murder plot by a manipulative wealthy businessman played by Stephen Collins.
The plot is standard movie-of-the-week fare but the main selling-point of the film is to include Ms Russell, who has the longest hair of possibly any Hollywood starlet I know (she certainly did then), in as many shots as possible and in a variety of costumes including the inevitable bikini. This is not to denigrate her performance which is assured and confident as she alternates, sometimes implausibly, from wide-eyed ingenue to femme fatale. The film is very derivative and has overtones of the first "Stepfather" film in particular. If you're a fan of Ms Russell this is well worth adding to your collection. If you're not and you don't like TV potboilers either then this is perhaps not for you. Also features Phylicia Raschad (Mrs Cosby in "The Cosby Show") as a lady detective.