28 Weeks Later wasn’t a bad film until it started stretching the bounds of how people interact with reality. I’m not talking virus created zombies that kill anything that moves (except for each other, which I did find rather convenient). I understand that a movie like this is going to go outside the lines when it comes to being real. However, in order to make it immersive, you have to portray your characters as real people in an unreal situation. They have to still behave and interact in the same manner as they would without the extraordinary circumstances. This movie loses that about a third of the way in.