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A detective is a police officer, whose duty is to detect criminals, by in-depth investigation of cases. When attempting to solve a crime, detectives conduct a criminal investigation that seeks all the facts about a crime to help determine the truth: what happened and who is responsible. This involves making a preliminary and final investigation. A detective’s task is to gather, organize, and use information about social behavior. To effectively complete that task a …

…identified and found guilty. If the case is not solved, ongoing suspicion, and lack of closure can ruin the lives of many people of many people. Thus, investigators must be familiar with crimes and their elements, modus operandi information, the major goals of investigation, and the basic functions of investigating officers. All of these factors help a detective solve cases efficiently and successfully. Studies show that criminal investigations are needed but can always use improvement.