Factual error: In the scene where Earl is fighting the other prisoner, he is using a "sword" made from a bar of metal, it has a blade that is well over 2 feet long from the tip to the hilt. At the end of the fight the other prisoner is standing with his back against a solid concrete pillar, but Blake somehow manages to shove the "sword" through him all the way up to the hilt. This wouldn't be possible unless Blake were somehow able to shove the bar into the concrete.
Other mistake: When Blake makes the tape of Styles and the prostitute, and uses it to discredit him, I doubt that Blake and his buddy had access to top notch equipment. Surely, experienced Los Angeles detectives would have a great technician on board who would be able to testify that the tape was fixed or modified, such as Styles's mouth movement.