Factual error: At the start of the movie it said "NEW YORK CITY 2000", then went to a panoramic view of New York City minus the Twin Towers. Even though they stated the year was 2000 and they didn't go down until 2001.
Factual error: During the scene in Chinatown Horvath refers to Sun Lok as "an old associate" "that lived 200 years ago". Horvath was in the Grimhold 200 years ago. How could he have known him? (00:31:25)