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Fingerprints have been used for identification purposes for centuries, but their role in CSI is a relatively recent phenomenon. It took the pioneering work of Argentine anthropologist Juan Vucetich in 1892 to realise their crime-cracking potential ? and in doing so, inspire the techniques used to snare Richard Ramirez, the infamous ?Night Stalker? who terrorised Los Angeles almost a century later.

Watch the full National Geographic - The Night Stalker movie online at no cost in high-definition (HD) quality. No downloads needed—simply click to play and experience the excitement with English subtitles included for your convenience.