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A Dutch father and son, Hans and Zacharias Janssen, invented the first compound microscope in the 1590.

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The first known legal autopsy, to try to find the cause of death, took place in Bologna in 1302 and was ordered by a magistrate.

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The change in body characteristics when one lies

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The change in body characteristics when one lies

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In 300-250 B.C. Erasistratus, Greek physicist and physician attempted to detect deception by measuring the pulse.

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The first arsenic test took place in 1775 by a Swedish chemist names Carl Wilhelm Scheele

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The first successful bullet comparison occurred in 1835 when member of Bow Street Runners in London matched a recovered bullet from a murder victim to a specific type in a suspect's home to confirm he made the bullet.

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The first national DNA database was established in the United Kingdom in April of 1995

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In 1910 Edmond Locard was given the opportunity by the Lyon police department to create the first police laboratory.

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DNA fingerprinting was invented in 1984 by Professor Sir Alec Jeffreys after he realized you could detect variation in human DNA, in the form of minisatellites.

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The earliest evidence of photographic documentation of prison inmates dates back to 1843-1844 in Belgium for experimentation.

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Sir Frances Galton published his book "Finger Prints" in 1892, which included the first published classification system for fingerprints.

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Luminol was first used at a crime scene in 1937 in Germany.