Set design’s loss may be criminal justice’s gain. A new technology may eventually replace luminol in detecting traces of blood.
We've all seen an intrepid investigator spray down a crime scene with luminol and turn off the light, and a seemingly innocent room glows blue, illuminated by the leftover traces of gore. This is usually a sign someone was horribly murdered in that room. But in reality it's also possible that they got into a food…
Spritz luminol on your pennies and they’ll glow. Don’t worry! It's not blood — your penny's just been framed.
Call it CSI: Abracadabra. A camera that can make invisible substances reappear as if by magic could allow forensics teams to quickly scan a crime scene for blood stains without tampering with valuable evidence.