Alexander Gettler was an American chemist and forensic scientist known for his pioneering work in the field of forensic toxicology. Born in 1883, he played a significant role in developing methods to detect poisons and drugs in the human body, which greatly advanced criminal investigations. His research contributed to the establishment of forensic science as a vital tool in law enforcement. Gettler served as the chief toxicologist for the New York City Medical Examiner's Office, where he analyzed numerous high-profile cases. His work laid the foundation for modern toxicology practices and influenced future generations of forensic scientists, making him a key figure in the history of forensic science.