The Plot:

  The sequel to the surprise 2002 hit 28 Days Later begins some six months after the original outbreak of the so-called Rage Virus that turned otherwise normal people into raving, homicidal madmen. A United States-led NATO relief force has moved into Britain and secured the spread of the virus. Scientists proclaim that London is now free from infection and efforts are be made to repatriate the citizens back into their homes. 
  But all hell breaks loose through the actions of a stupid, if not well meaning janitor, that makes contact with a family member he believed lost to the virus, specifically to the murderous monsters into which it transforms its victims. As the virus begins spreading again the security of Britain and possibly all the world is threatened. 

The Point:

  Let me first say that there is a pair of scenes in this movie that possibly contain some of the most believable performances ever seen in a horror film. Robert Carlyle is absolutely striking in his performance as a father (Don) and husband who feels guilty about running to save his own life and leaving his wife (Alice/Catherine McCormack) to die at the hands of murderers. Don explains to his children Andy (Mackintosh Muggleton) and Tammy (Imogen Poots, at whose name, I must confess, a childish and knee-jerk compulsion to giggle) about the loss of their mother. This scene is truly something to behold. People don’t win Oscars for movies like this, but I’ve seen no one more deserving of peer and public recognition for his performance recently than Carlyle in 28 Weeks Later.
  Note that I did not say this is the most believable horror film ever. It is not. But by and large 28 Weeks Later seems genuine in its attempts to maintain a secure, infection-free facility even at the point of a bunch guns.
  This movie ended, as many of these “zombie” movies do with the so-called “uh-oh” gag. In this particular case the “uh-oh” gag is, to me, a hilariously funny joke at the expense of the French. Way to go.