Continuity mistake: The black sludge on the girl's white pants when she's in the sewer at the end is constantly changing. It sometimes changes position or isn't there at all in later shots. The best example is when she lures Jason away from the guy that just got knocked out and runs into the dead end. She slides down the wall next to the toxic chemical container and the back and sides of her pants are completely covered in the black sludge, when she runs away, her pants are totally clean. (01:27:55)
Factual error: When Rennie and Sean are on the ladder and the toxic waste is flooding through "destroying" Jason, they are completely unscathed. There is no way there would be no splash back burning them, plus the fumes from the toxic waste which they are subjected to would have done them serious bodily harm.
Continuity mistake: In the police car Rennie jumps into the driver's seat and drives off, while the other three stay in the back. After the car crashes, Sean has suddenly moved to the passenger seat. (01:11:35)
Plot hole: Jason all of a sudden can drive a boat and out of nowhere, seems to know about a cruise ship filled with teenagers ready for him to kill. Yeah, makes sense to me. Especially since there is land with buildings right where Jim and Suzie drop anchor on their boat. Jason gives up killing people in those buildings to drive to a cruise ship that he cannot possibly know about? Also the fact that the survivors get to New York and minutes later Jason just happens to pop out of the water? Are we led to believe that he not only learned how to swim to New York but he managed to not kill everyone while they were in the life raft?SAZOO1975