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"
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"
Trivia: The name of Langdon's editor, Jonas Faukman, is an anagram of Dan Brown's real life editor, Jason Kaufman.