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Every Contact Leaves a Trace
I'm quite notorious for terrifying crew members on the show as I do. The one thing that always stuck with me when I did forensics briefly was low cards, theorem. Every contact you make with a human being leaves a trace - physically and emotionally. Susan's DNA can now be at that crime scene. She's never been at the crime scene, but her DNA is there. So the interpretation of the DNA is what's important. And we understand very little about transfer,. so how it gets from one person to another. How long does it persist? You don't actually know that research.