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A detective is an investigator, either a member of a police agency or a private person. The latter may be known as private investigators (P.I.s or "Private I's", hence the play-on-words, "Private Eyes"). Informally, and primarily in fiction, a detective is any licensed or unlicensed person who solves crimes, including historical crimes, or looks into records.



In some police departments, a detective position is appointed, rather than a position achieved by passing a written test.[citation needed] Prospective British police detectives must have completed at least two years as a uniformed officer before applying to join the Criminal Investigation Department. UK Police must also pass the National Investigators' Examination in order to progress on to subsequent stages of the Initial Crime Investigators Development Programme in order to qualify as a Detective.[1]

In many other police systems, detectives are university graduates who join directly from civilian life without first serving as uniformed officers.[citation needed] Some people[who?] argue that detectives do a completely different job and therefore require completely different training, qualifications, qualities and abilities than uniformed officers. The opposing argument is that without previous service as a uniformed patrol officer, a detective cannot have a great enough command of standard police procedures and problems and will find it difficult to work with uniformed colleagues.

Detectives obtain their position by competitive examination covering such subjects as principles, practices and procedures of investigation; interviewing and interrogation; criminal law and procedures; typically both officers and detectives do interrogation, but detectives deal with more sensitive situation. applicable law governing arrests, search and seizures, warrants and evidence; police department records and reports; principles, practices and objectives of courtroom testimony; and police department methods and procedures.[citation needed]

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