audiotapes, texts, letters, a diagram, fragments of leads pointing in wildly different directions to pete moore or a drug car tell or a crazed assassin. and now they had another lead to work on. >> somebody made an anonymous call to the sheriff's department, said -- the caller basically stated, you need to be looking at paul moore. >> paul, not peter? >> paul, not peter. >> for all the produce that comes rolling out of colusa county, california, its population of humans is small. just 22,000. everybody seems to know just about everybody here. so when a would-be anonymous tipster called the sheriff's office, it turned out he wasn't anonymous at all. the detective who took the call recognized the voice and phoned him right back. >> says, hey, you need to come in and talk to us. >> the caller as it turned out was this man, dave moore,