Goofs

When they are investigating the first picture, a detective's computer screen shows the third picture that hasn't been sent yet.

Two different cats were used to shoot the scenes with the second victim. One cat is darker than the other.

Near the end of the police chase when Griffin hits the gas pumps, gas is spraying like rain. He then lights it and it blows up. From a long shot we see fire, but then we go back to a shot of his car reversing and it is still raining gas.

Right after one of the phone operators tells the caller that there may or may not be a reward for the disappearance of Ellie, they show a shot from behind the phone operator and there is a picture of Jesse (who has not yet disappeared) on her computer screen.

When Campbell pulls out drawer in bathroom in his rush to get the syringe, the bottom of the drawer falls out. In the close-up of Campbell's search through drawer, the bottom of the drawer is in place.

Griffen shoots Campbell in the knee. Later, we see him with a bandage on the knee but completely over his pants. Decidedly not standard first aid procedure.

Knocking a gas pump off its foundation will not result in gasoline spraying up out of the ground.

Towards the end of the film, right before Griffin shoots Campbell with the shotgun, we see a close-up of the Glock pistol that Campbell is holding. You can clearly see that the barrel is plugged with only a small hole showing. This is obviously a prop gun, most likely a BB gun.

There are 3 million people who live in Chicago and it is absurd on national TV to show a picture of Jane Doe and nobody is paying attention, as if people are not watching the news.

All the fuel on the floor would have caused explosive vapors to fill the room long before it was lit by candles being knocked to the floor, and the candles would have already lit the vapors.

Joel clearly said there was a pool of kerosene, which (along with diesel) does not vaporize like gasoline. There are no vapors to ignite.

At the end of the movie, just after James is pulled from the river his clothes are almost dry.

Obvious stunt-double or stand-in for Griffin in over-the-shoulder running shots, revealed by his stiff wig.

An agent's computer identifies the address of the building "20 miles north of the city" where David Allen Griffin is keeping Dr. Polly Beilman as the 1100-north block of Dearborn in Evanston. Dearborn does not run into Evanston; the 1100 N. block of Dearborn is near downtown Chicago. And, an address clearly shown in the exterior shots of the building says "500 W. Cermak" which would be Chinatown on Chicago's near South side.

In the photo shop, Campbell calls Jane Doe I's home and Griffin answers. Campbell then asks his policemen to trace the call when he had consulted her employee file to get the phone number. And anyway, why wasn't he already on his way?

At the gas station, 2 policemen were killed, but all law enforcement agencies do not consider Griffin a cop killer.

Obviously the patrol that Campbell uses to chase Griffin is not from CPD, the words 'CHICAGO POLICE' are both on the back door when all the time he was always under between the 2 doors without his emblem being seen either (some emblems say CAPS), and the light bar is very old.