Further research into detectives

In some police departments, a detective position is not appointed, it is a position achieved by passing a written test after a person completes the requirements for being a police officer. 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. 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.