Continuity mistake: Just after Sydney gets the book snatched from her by the guy in car, her hands stay near her body and don't move, but in the next shot her hands are thrown out to the side to add a surprised effect.
Continuity mistake: When Sydney has the "Book of Love" from the limo she starts to read it. In one shot she holds the book firmly with her hands wrapped around it. But when the motorcyclist grabs it she is holding the bottom of the book in the tip of her fingers [To aid the stunt].
