Factual error: The criminologist describes the events of the movie as taking place "on a late November evening". In the very next scene, Brad and Janet are driving in Brad's car, and President Richard Nixon's resignation speech is playing on the radio. Nixon resigned in August of 1974. (00:12:00)
Factual error: In the fight immediately after Vic meets Quilla June, someone approaches Vic's nest from the right and fires just past his head. Vic turns and returns fire. The raider, who was moving forward, flies back from the impact and dies. Of course, bullets don't spread out their impact energy enough to knock someone back, no matter the caliber. (00:38:30)
Factual error: In the scene inside the Cave of Death, the priest reads the 'Last Words of Joseph of Arimathea'. As he reads them, his eyes go from left to right. If it was Aramaic like he said, he would read it from right to left.
Factual error: When the Chinese are loading crates onto the truck with St Paul's in the background, two much more modern buildings are visible either side of the cathedral - out of keeping with the 1910s/20s setting.
Factual error: Desmond Dekker's backing group are called the aces, but in the opening credits the group is credited as "Desmond Dekker and the Israelites" this is also repeated when the announcer introduces the group when they play at sound city. Israelites is the title of Desmond's biggest hit single, the song he performs in this film.