Plot hole: Lisa calls Cynthia and tells her to pull the hotel's fire alarm, which she does. Cynthia then physically goes up to the Keefe's suite to warn them something is wrong. Even though the fire alarm was pulled and it can be heard blaring in the lobby, the Keefes and the security team seem to have no idea that there is a problem until Cynthia knocks on the door and tells them to get out.
Red Eye (2005)
1 plot hole
Directed by: Wes Craven
Starring: Rachel McAdams, Brian Cox, Cillian Murphy, Laura Johnson
Genres: Thriller
Continuity mistake: When Lisa is on board the plane, she is wearing stiletto heels (best seen when she is collapsing in the bathroom). However, when she is running through the airport, she is wearing flat shoes. This is most easily seen when she comes of the transporter belt, when she trips and one of her feet swings into the air. Later, when she kicks Jack on the stairs of her house, she is wearing stiletto heels again.
Lisa Reisert: Is it Jack for short?
Jackson Ripner: No. I haven't gone by Jack since I was ten years old. Last name's Ripner.
Lisa Reisert: Jack Ripner... Jack the... Oh!
Jackson Ripner: There you go.
Lisa Reisert: That wasn't very nice of your parents.
Jackson Ripner: That's what I told them. Before I killed them.
Trivia: When in the plane's bathroom, in an early take Cillian Murphy threw Rachel McAdams so hard against the bathroom wall that he knocked her unconscious. If you look at the shot used in the movie where he throws her against the wall, you can see his hand in her hair protecting her head so he didn't hurt her again. Not a mistake, as he's not trying to knock her out in the film, just rough her up, but worth looking for.
Answer: It's a political assassination plot. Jackson is an operative working for the terrorist organization that was hired to kill Keefe, the Deputy Secretary of Homeland Security. It's nothing personal or of interest to Jackson, just another job. He even mentioned to Lisa that it was only business when she asks why he's doing it.
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