A detective is an investigator, usually a member of a law enforcement agency. They often collect information to solve crimes by talking to witnesses and informants, collecting physical evidence, or se
Police detectives investigating a homicide in Oklahoma City, Oklahoma, United States
H Division, of police detectives, including Frederick Abberline (left, with cane), at Leman Street police station, of the London Metropolitan Police, two years before the Jack the Ripper serial killer murders of 1888. Photograph circa 1886
Allan Pinkerton (pictured here circa 1861) was, in 1850, a detective of the Chicago Police Department and, in 1851, the founder of the Pinkerton Detective Agency.
Edward Bonney, an American bounty hunter and amateur detective from Iowa who in 1845 infiltrated the "Banditti of the Prairie", wrote the 1850 book The Banditti of the Prairies: or, The murderer's doom, a tale of Mississippi Valley and the Far West; woodcut from 1850.
The Criminal Investigation Department is the branch of a police force to which most plainclothes detectives belong in the United Kingdom and many Commonwealth nations. A force's CID is distinct from i
Detective
…communication. Before 2017, prospective British police detectives must have completed at least two years as a uniformed officer before applying to join the Criminal Investigation Department. Since 2017, applicants from outside the police force have been able to apply directly for positions as trainee detectives. UK Police must also pass…
Indonesian Police investigators from the criminal investigation unit