Character mistake: In the 7/19/19 episode, Rafe tells Gabi that, even if she can open the briefcase she stole from Xander, nothing she finds would be admissible in court as evidence, because it is "fruit of the poisonous tree." Rafe is a police officer, but he's wrong about this. The exclusionary rule only applies to searches by police. If a private citizen obtains evidence illegally, such as by trespassing or theft, it actually is generally admissible in court, although the citizen may be subject to prosecution for the illegal action.
Character mistake: In the 5/25/17 episode, as the plane is experiencing distress, J. J. Says that Sonny is "as good a pilot as Sully Sullivan." The aviator's name is Sully Sullenberger.