Scream 3 (2000)

Continuity mistake: When Sidney is first going into the house for the end of the movie it is clear that she is not wearing the vest underneath her clothes and as she is walking around or when she is rolling on the ground fighting with her half brother you see her bellybutton but then she has the vest on and it goes over the belly button.

Sidney: What do you know about trilogies?
Mark: All I know is that in the third one, all bets are off.

Trivia: Kevin Williamson (who had written the first two films, as well as the fourth) had an entirely different plot in mind, which he had outlined and given to the studio, only for it to be passed on. His original concept had the killers in the film be members of a "Stab" (the film-within-the-film) fan-club, who orchestrated the murders in order to gain fame and become heirs to Sidney Prescott's status as the soul-survivor. Aspects of this unused original story treatment were re-written into the fourth film, which features a killer whose motivation is fame and becoming the soul-survivor.

Question: How does Roman find Sidney's info for the crisis hotline? We never see him use Dewey's phone and I don't think it's possible he attacked Neil because Sidney would've found out about it.