My story is a thriller, set in modern day America, and in it, the leader of a gang, recruits members by giving them blood ins. A blood in, is a term for when a new recruit has to spill the blood of another person to join the gang. The leader of the gang video recorded all of the blood ins over the years, in order to have insurance on his members in case any of them turn on him. He arranged for the recordings on any of them to go to the police should that happen, and he cannot find where the member is, if so. I wrote it so that in the ending, the police discover all the blood in videos and use that as evidence to prosecute each member. But I was told by a couple of readers that this is a plot hole, because the police are not allowed to use videos of murders as evidence, because technically the videos can be 'hearsay', since there is no way to prove that the victims in the videos are the actual victims, and they could have been actors in make up and the whole video could have been forged. Therefore it's hearsay and would be admissible as evidence. However, the villain doesn't any logical reasons to keep any other evidence of his gang's crimes around. But if the blood in videos would not be admissible, he doesn't have a reason to have videos as leverage now either. So is there anything I can do about this plot hole, or does it count as one?