If you like 28 Days/Weeks later, chances are you going to like this. Very similar type of film, people becoming ill, going mad, killing other people, mass culling and incubation operation etc.. nothing new here really. The acting from Olyphant and Mitchell was great - but that was about it for great acting. If you like George A Romeo's style and ending to films you will love this. Anderson was too much over the top in a Eli Roth sort of manner to fit in with the better acting of Olyphant really. The atmosphere of the film was great though, you feel worried, intrigued and have a sense of urgency needed. Give it a go, its better than an average slasher flick thats for sure!