Just for grins, here's a link to a 2011 SDSO statement answering FAQ's about evidence in the RZ case:
https://www.sdsheriff.net/coronado/faq.html
I have to admit, it's amazing the skill involved in avoiding discussion of evidence they didn't test while cherry-picking answers for the evidence they did test. It's really masterful. Here's a good example where they're discussing the DNA and fingerprint evidence on the knives:
They completely skirt the issue of where RZ's fingerprints were located on the big knife. They left that information out so the public would assume her prints were found on the handle
No mention of the fact (though it came out in follow up) that the SDSO tech only tested 10 spots on the rope located near the bindings. No testing was done on the rest of the rope, including the area near where Adam allegedly cut her loose after finding her hanging. So when they say "Adam's DNA wasn't found anywhere at the crime scene" it's because
1 Adam was probably wearing the gloves found at the crime scene
2 SDSO never tested evidence in areas where Adam's DNA might have showed up.
Comparing this FAQ answer sheet with what the evidence now shows should be enough to get a new independent criminal investigation. No wonder it took them so long to hold the PC to reveal their conclusions. They probably spent most of the time figuring out how to spin the results.
ETA: Relevant old thread for that discussion.
https://www.websleuths.com/forums/showthread.php?183224-Evidence-not-tested