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  The first case ever recorded using forensic science. Forensic entomology was used to find a slasher in 13th century China. Flies were attracted to the blood residue on the killer's sickle (bladed farming tool).
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  Considered the "Father of Toxicology". He published his first work in 1814 called, "Traité des poisons tirés des règnes minéral, végétal et animal; ou, Toxicologie générale" Orfila worked to make chemical analysis a routine part of forensic medicine, and made studies of asphyxiation, the decomposition of bodies, and exhumation.
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  Used thumbprints on documents to identify workers in India.
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  “Father of Criminal Identification”. Developed Anthropometry which uses body measurements to distinguish individuals
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  Uses fingerprints to eliminate an innocent burglary suspect.
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  Published his first Sherlock Holmes story; Considered the first “CSI”, featured in four novels and 56 short stories, popularized scientific crime-detection methods.
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  Published Finger Prints. Conducted the first definitive study of fingerprints and their classification. Gave proof of their uniqueness.
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  Wrote the first paper describing the application of scientific principles to the field of criminal investigation. Published Criminal Investigation
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  Discovered the ABO blood groups, later received Nobel Prize.
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  Incorporated Gross’ principles within a workable crime lab; became the founder and director of the Institute of Criminalistics at the University of Lyons, France.
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  Published Questioned Documents. Developed the fundamental principles of document examination
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  Developed a method for determining blood type from dried blood.
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  Established the First Crime Lab in United States, located in Los Angeles
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  Developed a comparison microscope; first used to compare bullets to see if fired from the same weapon.