this be one horror movie i would find sexually move . shiver be a movie that be mostly that way itself . here you have a apartment complex that have a lot of couple there . unknown to anyone and there something unnatural go on . one doctor make a parasite that should replace a diseased organ . that plan do work and however and the side effect be increase sexual desire . once that get out and all hell break loose . the young girl whom he have an affair with be the first and the second victim be the guy who work for a firm keep a secret from his wife . the more people get infect by these parasite and the wilder eerything get . everyone want the desire for sex . well and there no tell how an infected person look like . the only way you can tell be when youre get mob by these horny and over sexed freak . like most zombie movie you would smel dead flesh in the air . in shiver it not love and it sex and and it wild . this movie should be title and invasion of the sex fiends . but that title can be consider pornographic . 3 out of 5 star .