Do true crime amateur sleuths help or hinder?

The well-reported Delphi, Murdaugh and Idaho murders have a major theme in common — an overwhelming number of armchair detectives, internet sleuths and obsessed true crime fans. Many argue their main pursuit is justice, but their unfounded theories and unwarranted finger-pointing can serve as more of a distraction. Amateur sleuths have, however, had a few successes. Here's how they've affected cases, the real reason behind true crime addiction and how the entertainment industry is benefiting.