In my story, I want the MC to get evidence on the villains, but I cannot find a way for them to do it, that would be admissible in court. Basically my story follows the structure that a lot of crime thrillers do, where one cop believes something different than all the rest, believes the villains are still out there, so he goes out on his own, to catch the real bad guys, and prove everyone else wrong. The only problem is, is I do not know how to do this where the MC can still come up with admissible evidence. I have done a lot of research and have asked many legal experts, but the law is so well covered in this area, that I cannot seem to find any loopholes for a cop to work around. Since I am writing a screenplay, I am into movies, and tend to use those as examples, if that's okay. One that comes to mind is The Negotiator (1998). In that movie, the MC is a cop who is framed for murder, and then breaks the law in order to get evidence, such as illegal search and seizure, without a warrant to get it. Perhaps he was able to work around the law, cause he was a framed fugitive? What if my MC frames himself for one of the murders the villain gets away with, and then he uses this framed fugitive exception to the rule, to search and seize evidence of the real crimes without warrants, and is therefore able to legally get admissible evidence, which the other cops were not? Or is framing himself for murder not the way to go, and there is a simpler, easier way? Is there?