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> I got the sense he kept good notes because he would speak to exacting detail about decades old cases. Maybe good notes, but also maybe good staff writers. >

• southernplaces7 2y ago
  >How did he know that it was dropped by the killer and not some random customer? As any diligent investigator (not just of the criminal justice type) can tell you, he didn't, but it was something to dig deeper into and then hopefully find the next piece of information that it connects to. In this case that was just the identity of its buyer, but from there he could scrutinize that person to see if anything else about them lines up, or if they were just coincidentally there. Usually, if you track someone down based on something very circumstantial, but they really were the guilty party, you'll eventually find other information to cement that connection. It's not as if he would have found the owner of the necklace and arrested them right then.