Have just watched this and I have to say I am surprised at the previous review. I found the story line quite weak, and although a few of the actors gave believable performances, most of the acting was rather hammy. The special effects were the sort I would expect to see on a made for TV movie, and made me feel no sorrow for the victims. The story was a little disjointed in places, and because we are shown the 'parasites' very early on in the film, there is no room to build any tension and the film almost plods along. I found myself checking to see how long there was left to go. Overall, I give this a 5/10, mainly for the few actors that managed to work their script into believable dialogue.