Every piece of evidence gets its own paper bag. Plastic bags trap moisture and destroy DNA. So if you see a plastic-wrapped gun on TV, laugh. That’s Hollywood nonsense.
They label each bag with a special code. The chain of custody begins here. If the bag is missing one signature, the whole case falls apart. Lawyers love that loophole. It’s basically legal paperwork daredevilry.
Quirky detail: Chewing gum is gold. Why? It holds perfect saliva DNA. So, detectives sometimes pick gum off a sidewalk. Yes, it’s weird. Yes, it works.
