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Detective



 
 
A detective is an investigator, either a member of a police
Police

Police are agents or agencies, usually of the executive , empowered to enforce the law and to ensure public and social order through the legitimized use of force....
 agency or a private person. The latter may be known as private investigator
Private investigator

A private investigator or private detective is a person who can be hired by individuals or groups to undertake investigations. Private investigators often work for lawyers in civil cases....
s (P.I.s or "Private I's", hence the play-on-words
Pun

A pun, or paronomasia, is a form of word play that deliberately exploits ambiguity between similar-sounding words for humour or rhetorical effect....
, "Private Eyes"). Informally, and primarily in fiction
Fiction

Fiction is an imaginative form of narrative, one of the four basic rhetorical modes. Although the word fiction is derived from the Latin fingo, fingere, finxi, fictum, "to form, create", works of fiction need not be entirely imaginary and may include real people, places, and events....
, a detective is any licensed or unlicensed person who solves crime
Crime

Societies define Crime as the breach of one or more rules or laws for which some Government or force may ultimately prescribe a punishment.The word crime originates from the Latin crimen , from the Latin root cerno and Greek ????? = "I judge"....
s, including historical crimes, or looks into records.

ost American
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 police departments, Detective is often an appointed position, rather than a position achieved by passing a written test.






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Encyclopedia


A detective is an investigator, either a member of a police
Police

Police are agents or agencies, usually of the executive , empowered to enforce the law and to ensure public and social order through the legitimized use of force....
 agency or a private person. The latter may be known as private investigator
Private investigator

A private investigator or private detective is a person who can be hired by individuals or groups to undertake investigations. Private investigators often work for lawyers in civil cases....
s (P.I.s or "Private I's", hence the play-on-words
Pun

A pun, or paronomasia, is a form of word play that deliberately exploits ambiguity between similar-sounding words for humour or rhetorical effect....
, "Private Eyes"). Informally, and primarily in fiction
Fiction

Fiction is an imaginative form of narrative, one of the four basic rhetorical modes. Although the word fiction is derived from the Latin fingo, fingere, finxi, fictum, "to form, create", works of fiction need not be entirely imaginary and may include real people, places, and events....
, a detective is any licensed or unlicensed person who solves crime
Crime

Societies define Crime as the breach of one or more rules or laws for which some Government or force may ultimately prescribe a punishment.The word crime originates from the Latin crimen , from the Latin root cerno and Greek ????? = "I judge"....
s, including historical crimes, or looks into records.

Detectives


Selection and training

In most American
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 police departments, Detective is often an appointed position, rather than a position achieved by passing a written test. Prospective British
United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom , the UK or Britain,is a sovereign state located off the northwestern coast of continental Europe....
 police detectives must have completed at least two years as a uniformed officer before applying to join the Criminal Investigation Department
Criminal Investigation Department

The Criminal Investigation Department is the branch of all Territorial police forces within the Policing in the United Kingdom and many other Commonwealth of Nations police forces, to which plain clothes detectives belong....
. 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. In the United Kingdom
United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom , the UK or Britain,is a sovereign state located off the northwestern coast of continental Europe....
 & Ireland
Republic of Ireland

Ireland is an Island country in north-western Europe. The modern Sovereignty state occupies about five-sixths of the island of Ireland, which was partitioned by the British on 3 May 1921....
, police detectives are generally permitted to carry an issued firearm.

In many other Europe
Europe

Europe is, conventionally, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally divided from Asia to its east by the water divide of the Ural Mountains, the Ural , the Caspian Sea, and by the Caucasus Mountains to the southeast....
an police systems, most detectives are university
University

A university is an institution of higher education and research, which grants academic degrees in a variety of subjects. A university provides both undergraduate education and postgraduate education....
 graduates who join directly from civilian
Civilian

A civilian under international humanitarian law is a person who is not a member of his or her country's armed forces. The term is also often used colloquially to refer to people who are not members of a particular profession or occupation, especially by law enforcement agency, which often use rank structures similar to those of military units...
 life without first serving as uniformed officers. Some people 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.

Additionally, in some U.S. police departments, policies exist that limit the term that an officer may serve continuously as a detective, and mandate that detectives must regularly return to patrol duties for a minimum period of time. This is based upon a perception that the most important and essential police work is accomplished on patrol, and that the skills, experience and familiarity with their beats that patrol officers maintain are essential for detectives to maintain as well. Investigations, by contrast, often take weeks or months to complete, during which time detectives may spend much of their time away from the streets. In this thinking, rotating officers also promotes cross-training in a wider variety of skills, producing both better detectives and uniformed officers. Such policies also serve to prevent "cliques" within detective bureaus that can contribute to corruption or other unethical behavior.

Detectives obtain their position by competitive examination covering such subjects as principles, practices and procedures of investigation; interviewing and interrogation
Interrogation

Interrogation or questioning is interviewing as commonly employed by officers of the police and military.The interviewee is also referred to as a "source"....
; criminal law
Criminal law

The term criminal law, sometimes called penal law, refers to any of various bodies of rules in different jurisdictions whose common characteristic is the potential for unique and often severe impositions as punishment for failure to comply....
 and procedures; applicable law governing arrest
Arrest

An arrest is the act of depriving a person of his or her liberty usually in relation to the investigation and prevention of crime. The term is Anglo-Norman language in origin and is related to the French word arr?t, meaning "stop"....
s, search and seizure
Search and seizure

Search and seizure is a legal procedure used in many Civil law and common law legal systems whereby police or other authorities and their agents, who suspect that a crime has been committed, do a search of a person's property and confiscate any relevant evidence to the crime....
s, warrant
Warrant (law)

Most often, the term warrant refers to a specific type of authorization; a writ issued by a competent officer, usually a judge or magistrate, which wikt:commands an otherwise illegal act that would violate individual rights and affords the person executing the writ protection from damages if the act is performed....
s and evidence; police department records and reports; principles, practices and objectives of courtroom testimony
Testimony

In law and in religion, testimony is a solemn attestation as to the truth of a matter....
; and police department methods and procedures.

Private detectives in the U.S. are licensed by the state
U.S. state

A U.S. state is any one of the 50 state of the United States that share sovereignty with the federal government of the United States . Because of this shared sovereignty, an United States is a citizen both of the federal entity and of his or her state of Domicile ....
 in which they live after passing a competitive examination and a criminal background check. Some states, such as Maryland
Maryland

Maryland is a U.S. state located in the Mid Atlantic States of the United States, bordering Virginia, West Virginia and the Washington, D.C. to the south and west, Pennsylvania to the north, and Delaware to the east....
, require a period of classroom training and must have experience with a weapon as well.

Organization

The detective branch in most larger police agencies is organized into several squads or departments, each of which specializes in investigation into a particular type of crime or a particular type of undercover operation, which may include: homicide
Homicide

Homicide refers to the act of killing another human being. It can also describe a person who has committed such an act, though this use is rare in modern English....
; robbery
Robbery

Robbery is the crime of seizing property through violence or intimidation. At common law, robbery is defined as taking the property of another, with the intent to permanently deprive the person of that property, by means of force or fear....
; motor vehicle theft
Motor vehicle theft

Motor vehicle theft, sometimes referred to as grand theft auto by the media and police departments in the US and UK, is the crime of stealing or attempting to steal a motor vehicle, including an automobile, truck, bus, motorcycle, snowmobile, trailer or any other motorized vehicle....
; organized crime
Organized crime

Organized crime or criminal organizations comprise groups or operations run by crimes, most commonly for the purpose of generating a money profit....
; fraud
Fraud

In the broadest sense, a fraud is a deception made for personal gain or to damage another individual. The specific legal definition varies by legal jurisdiction....
; burglary
Burglary

Burglary is a crime the essence of which is entry into a building for the purposes of committing an offence. Usually that offence will be theft, but most jurisdictions specify others which fall within the ambit of burglary....
; narcotics; vice
Vice unit

A vice unit or vice squad is a department in many Police that investigates public order crimes. This generally includes narcotics, alcohol , prostitution, pornography and gambling....
; forgery
Forgery

Forgery is the process of making, adapting, or imitating objects, statistics, or documents , with the intent to deception. The similar crime of fraud is the crime of deceiving another, including through the use of objects obtained through forgery....
; criminal intelligence
Criminal intelligence

Criminal intelligence is information gathered or collated, analyzed, recorded/reported and disseminated by law enforcement agencies concerning types of crime, identified criminals and known or suspected criminal groups....
; sex crimes; street crime
Street crime

Street crime is a loose term for criminal offences taking place in public places. It has moved to occupy the place once held by mugging. According to London's Metropolitan Police Force, street crime is...
; computer crime
Computer crime

Computer crime, cybercrime, e-crime, hi-tech crime or electronic crime generally refers to criminal activity where a computer or Computer networking is the source, tool, target, or place of a crime....
; crimes against children; surveillance
Surveillance

Surveillance is the monitoring of behavior. Systems surveillance is the process of monitoring the behavior of people, objects or processes within systems for conformity to expected or desired Norm in trusted systems for security or social control....
; and arson
Arson

Arson is the crime of deliberately and maliciously setting fire to structures or wildland areas. It may be distinguished from other causes such as spontaneous combustion and natural wildfires caused by lightning for example....
, among others.

Techniques


Street work

Detectives have a wide variety of techniques available in conducting investigations. However, the majority of cases are solved by the interrogation of suspects and the interviewing of witnesses, which takes time. Besides interrogations, detectives may rely on a network of informants they have cultivated over the years. Informants often have connections with persons a detective would not be able to approach formally. Evidence collection and preservation can also help in identifying a potential suspect(s).

Criminal investigation: the investigation of criminal activity is conducted by the police. Criminal activity can relate to road use such as speeding, drunk driving, or to matters such as theft, assault, fraud etc. When the Police have concluded their investigation a decision on whether to charge somebody with a criminal offence will often be made by the Director of Public Prosecutions (DPP) having considered the evidence produced by the Police.

In criminal investigations, once a detective has suspects in mind, the next step is to produce evidence that will stand up in a court of law. The best way is to obtain a confession from the suspect; usually, this is done by developing rapport and at times by seeking information in exchange for potential perks available through the District Attorney's Office, such as entering plea bargain
Plea bargain

A plea bargain is an agreement in a criminal case whereby the prosecutor offers the defendant the opportunity to plead guilty, usually to a lesser charge or to the original criminal charge with a recommendation of a lighter than the maximum sentence....
 for a lesser sentence in exchange for usable information. Detectives may lie, mislead and psychologically pressure a suspect into an admission or confession as long as they do this within procedural boundaries and without the threat of violence or promises outside their control. In the United States suspects may invoke their Fifth Amendment rights
Right to silence

The right to remain silent is a law protection given to people undergoing police interrogation or trial . The law is recognized, explicitly or by convention, in many of the world's legal systems....
 and refuse to answer any investigative questions until they consult with an attorney.

Forensic evidence

Physical forensic evidence
Forensic identification

Forensic identification is the application of forensics and technology to identify specific objects from the trace evidence they leave, often at a crime scene or the scene of an accident....
 in an investigation may provide leads to closing a case. Forensic science (often shortened to forensics) is the application of a broad spectrum of sciences to answer questions of interest to the legal system. This may be in relation to a crime or to a civil action.

The use of the term "forensics" in place of "forensic science" is (in a literal sense) incorrect; the term "forensic" is effectively a synonym for "legal" or "related to courts" (from Latin, it means "before the forum") and applies equally well to studies such as "forensics clubs" that practice formal debate. However, the single word is now so closely associated with the scientific field that many dictionaries include the meaning given here. Many major police departments in a city, county, or state, and the Federal Bureau of Investigation
Federal Bureau of Investigation

The Federal Bureau of Investigation is the primary unit in the United States United States Department of Justice, serving as both a Law enforcement agency body and a domestic intelligence agency....
, maintain their own forensic laboratories.

Records investigation

Detectives may use public and private records to provide background information on a subject. Police detectives can search through files of fingerprint records. In the United States, the FBI maintains records of people who have committed felonies
Felony

A felony is a serious crime in the United States and previously other common law countries. The term originates from English common law where felonies were originally crimes which involved the confiscation of a convicted person's land and goods; other crimes were called misdemeanors....
 and some misdemeanor
Misdemeanor

A misdemeanor, or misdemeanour, in many common law legal systems, is a "lesser" crime act. Misdemeanors are generally punishment much less severely than felony, but theoretically more so than administrative infractions ....
s, all persons who have applied for a Federal security clearance, and all persons who have served in the U.S. armed forces. As well, detectives may search through records of criminal arrests and convictions, photographs or mug shots, of persons arrested, and motor vehicle records.

With a warrant, police detectives can also search through Credit card
Credit card

A credit card is part of a system of payments named after the small plastic card issued to users of the system. It is a card entitling its holder to buy goods and services based on the holders promise to pay for these goods and services....
 records and bank statement
Bank statement

An account statement or a bank statement is a summary of all financial transactions occurring over a given period of time on a deposit account, a credit card, or any other type of account offered by a financial institution....
s, hotel registration information, credit reports, Answer machine messages, and phone conversations. Search warrants are not needed if the detective can obtain a National Security Letter
National Security Letter

A National Security Letter is a form of administrative subpoena used by the United States Federal Bureau of Investigation and reportedly by other U.S....
 (NSL) from the FBI or other federal agency. These are generally issued without significant oversight or probable cause.

Famous fictional detectives

The detective story
Detective Story

Detective Story is a film noir which tells the story of one day in the lives of the various people who populate a police detective squad. It features Kirk Douglas, Eleanor Parker, William Bendix, Cathy O'Donnell, Lee Grant, among others....
 has been a popular genre
Genre

A genre is a loose set of criteria for a category of composition; the term is often used to categorize literature and speech, but is also used for any other Art#Art forms or utterance....
 in literature
Literature

Literature is the art of written works. Literally translated, the word means "acquaintance with letters" . In Western culture the most basic written literary types include fiction and non-fiction....
 and the performing arts
Performing arts

The performing arts are those forms of art which differ from the plastic arts insofar as the former uses the artist's own body, face and presence as a medium, and the latter uses materials such as clay, metal or paint which can be molded or transformed to create some physical work of art....
 since Edgar Allan Poe
Edgar Allan Poe

Edgar Allan Poe was an American poet, Short story writer, Editing and Literary criticism, and is considered part of the American Romanticism. Best known for his tales of Mystery and the macabre, Poe was one of the earliest American practitioners of the short story and is considered the inventor of the Detective fiction genre....
 gave birth to it with his stories of master French
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
 detective C. Auguste Dupin in the mid-19th century. Arthur Conan Doyle
Arthur Conan Doyle

Sir Arthur Ignatius Conan Doyle, Deputy Lieutenant was a Scotland author most noted for his stories about the Detective fiction Sherlock Holmes, which are generally considered a major innovation in the field of crime fiction, and for the adventures of Professor Challenger....
's 19th-century character Sherlock Holmes
Sherlock Holmes

Sherlock Holmes is a fictional character of the late nineteenth and early twentieth centuries, who first appeared in publication in 1887. He is the creation of Scotland-born author and physician Sir Arthur Conan Doyle....
 and Agatha Christie
Agatha Christie

Agatha Mary Clarissa, Lady Mallowan, Order of the British Empire , commonly known as Agatha Christie, was an English people crime writer of novels, short stories and Play ....
's 20th-century creations Hercule Poirot
Hercule Poirot

Hercule Poirot is a fictional character Belgium detective created by Agatha Christie. Along with Miss Marple, Poirot is one of Christie's most famous and long-lived characters, appearing in 33 novels and 51 short stories that were published between 1920 and 1975 and set in the same era....
 and Miss Marple
Miss Marple

Jane Marple, usually known as Miss Marple, is a fictional character appearing in twelve of Agatha Christie's crime novels. Miss Marple is an elderly spinster who acts as an amateur detective, and lives in the village of St....
 are perhaps the most famous detectives in fiction. In many police drama series, detectives are depicted as being something of an elite class, with most uniformed police officers deferring to them. Most famous fictional government detectives work for local or regional agencies.

In the 20th century, "hard-boiled" private detective characters such as Sam Spade
Sam Spade

Sam Spade is a fictional character who is the protagonist of Dashiell Hammett's novel The Maltese Falcon and the various films and adaptations based on it, as well as in three lesser known short stories written by Hammett....
, Philip Marlowe
Philip Marlowe

Philip Marlowe is a fictional character created by Raymond Chandler in a series of novels including The Big Sleep and The Long Goodbye ....
 and Mike Hammer
Mike Hammer

Mike Hammer is a fictional character created by the American author Mickey Spillane in the 1947 book I, the Jury ....
 became enormously popular. Elements of detective work were also featured in stories depicting fictional 'government agents', such as Ian Fleming
Ian Fleming

Ian Lancaster Fleming was an English literature author and journalist. Fleming is best remembered for creating the character of James Bond and chronicling his adventures in twelve novels and nine short stories....
's James Bond
James Bond

James Bond 007 is a fictional character created in 1953 by writer Ian Fleming, who featured him in twelve novels and two short story collections....
 (the first two Bond film adaptations featured more investigative work than their successors) and Tom Clancy
Tom Clancy

Thomas Leo Clancy Jr. is an United States author, best known for his technically detailed espionage and military science storylines set during and in the aftermath of the Cold War....
's Jack Ryan
Jack Ryan (Tom Clancy)

Jack Ryan is a fictional character created by Tom Clancy who appears in many of his novels. The novels and film adaptations in which the character appears are collectively referred to as the "Ryanverse"....
. Meanwhile, in comics
Comics

Comics is a graphic Mass media in which are utilized in order to convey a sequential narrative; the term, derived from massive early use to convey comic themes, came to be applied to all uses of this medium including those which are far from comic....
, Dick Tracy
Dick Tracy

File:Dicktracy10121941.jpgDick Tracy is a long-running comic strip featuring a popular and familiar character in United States pop culture. Dick Tracy is a hard-hitting, fast-shooting, and supremely intelligent police detective who has matched wits with a variety of colorful List of Dick Tracy villain debutss, many based o...
 served as the archetypal police detective. In the Die Hard
Die Hard

Die Hard is the first action film in the Die Hard series. The film was produced by Lawrence Gordon and Charles Gordon , along with Joel Silver....
 series of films, Bruce Willis
Bruce Willis

Walter Bruce Willis , better known as Bruce Willis, is an United Statesn actor and film producer. His career began in television in the 1980s and has continued both in television and film since....
' character John McClane
John McClane

John McClane is a fictional character and the protagonist in the Die Hard series series of films. He is portrayed by actor Bruce Willis. Premiere ranked him as number 46 of the 100 Greatest Movie Characters of All Time list....
 is a NYPD Detective. Famed DC Comics
DC Comics

DC Comics is one of the largest and most popular American comic book and related media companies, along with Marvel Comics. A subsidiary of Warner Bros....
 character Batman
Batman

Batman is a Character , a comic book superhero co-created by artist Bob Kane and writer Bill Finger , appearing in publications by DC Comics. The character first appeared in Detective Comics #27 in May 1939....
 was also created around this time, who emphasized less on great physical strength and abilities (like Superman
Superman

Superman is a Character , a comic book superhero widely considered to be an American cultural icon. Created by American writer Jerry Siegel and Canadian-born artist Joe Shuster in 1932 while both were living in Cleveland, Ohio, Ohio, and sold to DC Comics in 1938, the character first appeared in Action Comics Action Comics 1 and subseque...
) and more on the human condition, including solving crimes as a detective. One of Batman's nicknames is "The World's Greatest Detective."

See also

  • Police rank
    Police rank

    Lists of the ranks of various police forces:...
  • Criminal Investigation Department
    Criminal Investigation Department

    The Criminal Investigation Department is the branch of all Territorial police forces within the Policing in the United Kingdom and many other Commonwealth of Nations police forces, to which plain clothes detectives belong....
  • Eugène François Vidocq
    Eugène François Vidocq

    Eug?ne Fran?ois Vidocq was a France criminal who later became the first director of S?ret? and one of the first modern private investigators....
  • Special agent
    Special agent

    Special agent is usually the title for a detective or investigator for either the United States United States Government or a state, county, municipal, or tribal government....
  • Labor spies
    Labor spies

    Labor spies are persons recruited or employed for the purpose of gathering intelligence, committing sabotage, sowing dissent, or engaging in other similar activities, typically within the context of an employer/labor organization relationship....
  • Criminal intelligence
    Criminal intelligence

    Criminal intelligence is information gathered or collated, analyzed, recorded/reported and disseminated by law enforcement agencies concerning types of crime, identified criminals and known or suspected criminal groups....