Detectives and investigators gather facts and evidence for criminal cases.
In the last few years, prime-time television has been overtaken by crime. Crooks, thieves, and murderers dominate the airwaves. This doesn't mean that criminals are behind all the shows on TV. Instead, they're IN the shows! Dramas and even comedies that show all aspects of investigating crimes and convicting criminals, from detective work to forensic science to court cases, are hugely popular. We are fascinated by mysteries and respect the people who solve them. While TV tends to glamorize everyday life, many of these shows give us a good look at the life of a detective or investigator.
Detectives and investigators work in state and local police departments. They also work in a variety of federal agencies. Their specific tasks depend on the size and type of the agency they work for. For example, a detective on a small city police force would perform very different tasks than an FBI agent. Nevertheless, all detectives have many duties in common.
When detectives receive cases, they begin by gathering data. They interview witnesses, suspects, and others who might have information. Detectives review and analyze records and case files. Many search computer files. Some types of detectives visit crime scenes to find fingerprints and collect other evidence. This can include blood, hair, fibers, or weapons. In some cases, they are the first to arrive at the crime scene. They make sure that evidence is not disturbed. They also keep potential suspects and witnesses at the scene. They may take them into custody or interview them. Detectives also may observe the activities of suspects without their knowledge. Sometimes detectives get court orders for searches or wiretaps. In addition, detectives record evidence with photos, videotape, or audio recordings.
Throughout investigations, detectives record their progress. They keep files on suspects and write reports of their findings. Records must be detailed and accurate since they are often used in court. When they have enough evidence to prosecute suspects, detectives make arrests. They often testify before the court or a grand jury.
Investigators often contact other departments. For example, some investigators work on task forces and must coordinate their work with other task force agencies. Another example is federal agents. FBI agents investigate crimes that violate federal laws, such as bank robbery. Drug Enforcement Administration (DEA) agents enforce laws relating to illegal drugs. These agents must keep local police departments informed of their activities.
Immigration inspectors interview people who are seeking entrance to the United States. They explain laws, check documents, and process applications for residence. They issue or deny permits based on their findings. U.S. Border Patrol agents guard U.S. borders to prevent smuggling and illegal entry. Customs inspectors enforce laws that control imports and exports. They check cargo, luggage, and items carried by people as they enter or leave the U.S. They also seize prohibited or smuggled items.