Other mistake: The wolf is accused of killing two officers, but they were only tased.
Suggested correction: "The wolf is accused of killing two officers, but they were only tased." It's actually he killed the 2 men not the officers thy were talking about the 2 men he had to help him.
Undisclosed - S2-E7
Other mistake: Toward the end of the episode the perpetrator is corned by the FBI. He steps backwards from the curb and is killed instantly by a garage truck moving at a high rate of speed. In the following scene the garbage truck is shown just a few steps beyond the scene just behind a parked car. The truck was going very fast when it killed the perp and could not have stopped so quickly. Further it would not have been going that fast in a curb lane with a parked vehicle right ahead of it.
Episode #1.3 - S1-E3
Other mistake: After the arrest of "ABC" and a brief scene with the interview to Betty's family, there's a prolonged close-up of a newspaper with the date "24 April 1933." Besides the article on the serial killer, there's a headline that says "German ministers in Rome - Uproar as Strong Arm men pack benches." The body of the article though talks about the Persian parlament, and the prime minister mentioned is "Dr. Mossadeg." Mohammad Mossadegh's public office as PM and his visit in the US mentioned in the article happened in the 50s.