If there are signs of corruption then the statute of limitations can be tolled. Still that isn't your choice but the district attorney's. And your own lawsuit should have been against the county although that too is a rough case to make and the likelihood that you'd have to fund your own lawsuit. If you've got 37 taped voicemail messages threatening to burn down the house and the police refused to take a police report or investigate, that's an eye opening piece of evidence that should probably be at the top of your list to present to an attorney general, district attorney or news reporter. But this is a long time ago... you'll need to be very organized to convince someone to pursue this.