Beast Within is a cheap horror film from Germany that was made with American audiences in mind. Why do I say that? All of the characters are speaking in English when it is clearly not their first language. This likely indicates this wasn't targeted at the native population, but specifically for export to English-speaking countries with America being one of the big ones. I guess it doesn't much matter as I do not think speaking in their native language could save this movie.
Zombie movies are a dime a dozen these days. You can't go anywhere near the horror section at your local store or rental chain and not be inundated with all manner of zombie flicks both known and unknown. If you are discriminating with your zombie dollar, you will not want to bother with this one. On the other hand, if you have burned through everything else, this will fill the need although it is not necessarily a zombie film. It is more like an "infected" movie where the result could be described as zombie-like.
Alright, if you ignore the low budget production values, poor script, and poor acting, this movie is not all that bad. Of course, it is not all that good either. As I sat there watching it, I kept waiting for it to take that turn into either unbelievably bad territory or that realm of potentially good if they had more time and a better budget. Instead Beast Within moved along on autopilot.
It opens with a car crash, followed by some voiceover about a doctor and a controversial vaccine for H5N1, a.k.a. bird flu. We see the old man attacked by birds and killed. Jump ahead a little bit and we pick up with Robert (Philipp Danne), the doctor's grandson and a doctor himself. He is traveling to his grandfather's remote mansion with a few of his friends to take care of remaining business and perhaps party a little bit.