Other mistake: When Peyton and Emma are watching a scary movie in Peyton's room, Emma is eating popcorn. However, if you watch her mouth, she isn't actually eating anything (just doing an incredibly bad job of pretending to). (00:34:15)
The Hand that Rocks the Cradle (1992)
1 other mistake
Directed by: Curtis Hanson
Starring: Julianne Moore, Ernie Hudson, Rebecca De Mornay, Annabella Sciorra, Matt McCoy
Plot hole: The only reason the movie takes place is because the news station that Mrs. Mott watches names Claire as the woman who filled the lawsuit against Mr. Mott. It is completely illegal for broadcasters to name or show a picture of a sexually assaulted victim.
Marlene 'Marl' Craven: The hand that rocks the cradle is the hand that rules the world.
Question: How did Peyton get back in the house at the end without keys?
Answer: She probably had another key made.
Answer: The same way any common criminal gets in to a house, she "broke" in by either kicking the door, or smashing a window, etc. A locked door is not that hard an obstacle to overcome.
Jazetopher