Hair, skin cells, fibers, residue, and specs of dust. Sherlock Holmes and his magnifying glass made the analysis of trace evidence famous, but French scientist Edmond Locard made it a movement. Discover how his bold theories on using microscopic evidence to solve crimes helped crack a high profile murder case in 1912. Then travel forward nearly 80 years to discover the trace evidence that was the only hope of catching California's notorious "I-5 Strangler." Two big cases, each solved by evidence barely visible to the naked eye.moreless
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