Other mistake: In chapter 5 Peter slaps his face once with the left hand and once with the right. The only problem is he doesn't have a right hand.
Suggested correction: This is false. The first slap was seen through a mirror. So the angle was flipped. But, he indeed hit himself with his same left hand. You can tell because the guy behind him appears over opposite shoulders in both shots, and because the first shot was through a mirror.
No...it's his right hand.
The correction is valid. The first slap is in the mirror. You can tell he slaps himself on the side of his face where his hair is hanging over his eye, which is his left side. When the 2nd slap happens, he slaps the side of his face where his hair is hanging over his eye, which is his left.
Continuity mistake: In chapter 4 when Mal'akh enters the Capitol Building, the guard notices the tattoos on the tips of the index finger and thumb protruding from the bandage, "the tip of his index finger bore the image of a crown, and the tip of his thumb bore that of a star. Later in chapter 13 Robert Langdon describes the tattoos, "On the thumb - a crown. On the index finger - a star"