The story writer has no logic! There are too many areas in the story without common sense. Here are some examples: When a heap of dead bodies were found by one man, he looked at the dead bodies one by one despite the stench. Even if he find a half dead victim can he do first aid in the sewer (which he didn't)? Wouldn't common sense reaction is to run and get help and not climb deeper in the sewer especially if the serial killer is lurking around? Another poor logical storyline is that the police detective's superior does not allow back up to be send because there is no suspect. What about asking for back up again after finding a victim who escaped up from the manhole? There was 2 policeman and they put the escaped woman in their police car and 1 policeman actually climb inside the manhole and got whacked. The other policeman was pulled inside the manhole by the killer also got whacked. Anyway, later one of the policeman got whacked by the serial killer who only has a crowbar despite the policeman being arm with a gun on a one to one fight. Sure, the 2 policeman can be a hero to go in the sewer but they first need to make a simple call to the base and they also need to rush the injured victim to the hospital. As far as I remembered, the 2 policeman did not even talk to the victim for more infromation, did not give first aid and they did not check the condition victim who has just escaped from the manhole. The victim unsucessfully warned the 2 policeman climbing in the manhole. Yes, there are many stupid actions taken by real people in real life but for the purpose of a movie left the audiences who have common sense feeling very frustrated during the show - resulting in a very poor movie rating and blaming the script writer who made the actors do stupid things.
