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Detectives and Criminal Investigators
Conduct investigations related to suspected violations of federal, state, or local laws to prevent or solve crimes.
Also Known As:
Crime Scene Investigator (CSI)
Criminal Investigator
Detective
Fugitive Detective
Fugitive Investigator
Investigator
Narcotics Detective
Narcotics Investigator
Police Detective
Special Agent
Wages
Annual wages for Detectives and Criminal Investigators in United States
Job Outlook
Below Average
New job opportunities are less likely in the future
United States
2034 Projected Employment
117,100
-1% Change From 2024
Explore Detectives and Criminal Investigators video
Tasks you might complete in a day.
- Preserve, process, and analyze items of evidence obtained from crime scenes and suspects, placing them in proper containers and destroying evidence no longer needed.
- Obtain and verify evidence by interviewing and observing suspects and witnesses or by analyzing records.
- Block or rope off scene and check perimeter to ensure that entire scene is secured.
- Obtain facts or statements from complainants, witnesses, and accused persons and record interviews, using recording device.
- Record progress of investigation, maintain informational files on suspects, and submit reports to commanding officer or magistrate to authorize warrants.
- Obtain summary of incident from officer in charge at crime scene, taking care to avoid disturbing evidence.
- Obtain and verify evidence by interviewing and observing suspects and witnesses or by analyzing records.
- Identify case issues and evidence needed, based on analysis of charges, complaints, or allegations of law violations.
- Summon medical help for injured individuals and alert medical personnel to take statements from them.
- Maintain surveillance of establishments to obtain identifying information on suspects.
- Secure persons at scene, keeping witnesses from conversing or leaving the scene before investigators arrive.
- Notify command of situation and request assistance.
- Perform undercover assignments and maintain surveillance, including monitoring authorized wiretaps.
- Secure deceased body and obtain evidence from it, preventing bystanders from tampering with it prior to medical examiner's arrival.
- Prepare and serve search and arrest warrants.
- Collaborate with other offices and agencies to exchange information and coordinate activities.
- Question individuals or observe persons and establishments to confirm information given to patrol officers.
- Participate or assist in raids and arrests.
- Preserve, process, and analyze items of evidence obtained from crime scenes and suspects, placing them in proper containers and destroying evidence no longer needed.
- Question individuals or observe persons and establishments to confirm information given to patrol officers.
- Provide information to lab personnel concerning the source of an item of evidence and tests to be performed.
- Check victims for signs of life, such as breathing and pulse.
- Organize scene search, assigning specific tasks and areas of search to individual officers and obtaining adequate lighting as necessary.
- Examine records and governmental agency files to find identifying data about suspects.
- Prepare charges or responses to charges, or information for court cases, according to formalized procedures.
- Examine records to locate links in chains of evidence or information.
- Determine scope, timing, and direction of investigations.
- Summon medical help for injured individuals and alert medical personnel to take statements from them.
- Testify before grand juries concerning criminal activity investigations.
- Obtain and verify evidence by interviewing and observing suspects and witnesses or by analyzing records.
- Notify command of situation and request assistance.
- Prepare reports that detail investigation findings.
- Analyze completed police reports to determine what additional information and investigative work is needed.
- Search for and collect evidence, such as fingerprints, using investigative equipment.
- Notify, or request notification of, medical examiner or district attorney representative.
- Record progress of investigation, maintain informational files on suspects, and submit reports to commanding officer or magistrate to authorize warrants.
- Secure deceased body and obtain evidence from it, preventing bystanders from tampering with it prior to medical examiner's arrival.
- Note, mark, and photograph location of objects found, such as footprints, tire tracks, bullets and bloodstains, and take measurements of the scene.
- Examine records and governmental agency files to find identifying data about suspects.
Subject areas you may need to master.
- Food Production - Knowledge of techniques and equipment for planting, growing, and harvesting food products (both plant and animal) for consumption, including storage/handling techniques.
- Law and Government - Knowledge of laws, legal codes, court procedures, precedents, government regulations, executive orders, agency rules, and the democratic political process.
- Computers and Electronics - Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming.
- Production and Processing - Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.
- Mathematics - Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.
- Physics - Knowledge and prediction of physical principles, laws, their interrelationships, and applications to understanding fluid, material, and atmospheric dynamics, and mechanical, electrical, atomic and sub-atomic structures and processes.
- Chemistry - Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods.
- Biology - Knowledge of plant and animal organisms, their tissues, cells, functions, interdependencies, and interactions with each other and the environment.
- Fine Arts - Knowledge of the theory and techniques required to compose, produce, and perform works of music, dance, visual arts, drama, and sculpture.
- Sales and Marketing - Knowledge of principles and methods for showing, promoting, and selling products or services. This includes marketing strategy and tactics, product demonstration, sales techniques, and sales control systems.
- Medicine and Dentistry - Knowledge of the information and techniques needed to diagnose and treat human injuries, diseases, and deformities. This includes symptoms, treatment alternatives, drug properties and interactions, and preventive health-care measures.
- Administrative - Knowledge of administrative and office procedures and systems such as word processing, managing files and records, stenography and transcription, designing forms, and workplace terminology.
- Engineering and Technology - Knowledge of the practical application of engineering science and technology. This includes applying principles, techniques, procedures, and equipment to the design and production of various goods and services.
- Economics and Accounting - Knowledge of economic and accounting principles and practices, the financial markets, banking, and the analysis and reporting of financial data.
- History and Archeology - Knowledge of historical events and their causes, indicators, and effects on civilizations and cultures.
- Administration and Management - Knowledge of business and management principles involved in strategic planning, resource allocation, human resources modeling, leadership technique, production methods, and coordination of people and resources.
- Psychology - Knowledge of human behavior and performance; individual differences in ability, personality, and interests; learning and motivation; psychological research methods; and the assessment and treatment of behavioral and affective disorders.
- Transportation - Knowledge of principles and methods for moving people or goods by air, rail, sea, or road, including the relative costs and benefits.
- Education and Training - Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects.
- Telecommunications - Knowledge of transmission, broadcasting, switching, control, and operation of telecommunications systems.
- Building and Construction - Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads.
- Geography - Knowledge of principles and methods for describing the features of land, sea, and air masses, including their physical characteristics, locations, interrelationships, and distribution of plant, animal, and human life.
- Philosophy and Theology - Knowledge of different philosophical systems and religions. This includes their basic principles, values, ethics, ways of thinking, customs, practices, and their impact on human culture.
- Mechanical - Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
- Communications and Media - Knowledge of media production, communication, and dissemination techniques and methods. This includes alternative ways to inform and entertain via written, oral, and visual media.
- Design - Knowledge of design techniques, tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.
- Sociology and Anthropology - Knowledge of group behavior and dynamics, societal trends and influences, human migrations, ethnicity, cultures, and their history and origins.
- Foreign Language - Knowledge of the structure and content of a foreign (non-English) language including the meaning and spelling of words, rules of composition and grammar, and pronunciation.
- Therapy and Counseling - Knowledge of principles, methods, and procedures for diagnosis, treatment, and rehabilitation of physical and mental dysfunctions, and for career counseling and guidance.
- Customer and Personal Service - Knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction.
- Public Safety and Security - Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.
- Personnel and Human Resources - Knowledge of principles and procedures for personnel recruitment, selection, training, compensation and benefits, labor relations and negotiation, and personnel information systems.
- English Language - Knowledge of the structure and content of the English language including the meaning and spelling of words, and rules of composition and grammar.
Strengths you may need in this role.
- Quality Control Analysis - Testing how well a product or service works.
- Speaking - Talking to others.
- Science - Using scientific rules and strategies to solve problems.
- Active Learning - Figuring out how to use new ideas or things.
- Persuasion - Talking people into changing their minds or their behavior.
- Technology Design - Making equipment and technology useful for customers.
- Systems Evaluation - Measuring how well a system is working and how to improve it.
- Management of Personnel Resources - Selecting and managing the best workers for a job.
- Writing - Writing things for co-workers or customers.
- Instructing - Teaching people how to do something.
- Service Orientation - Looking for ways to help people.
- Complex Problem Solving - Noticing a problem and figuring out the best way to solve it.
- Reading Comprehension - Reading work-related information.
- Critical Thinking - Thinking about the pros and cons of different ways to solve a problem.
- Equipment Selection - Deciding what kind of tools and equipment are needed to do a job.
- Installation - Installing equipment, machines, wiring, or computer programs.
- Programming - Writing computer programs.
- Operations Monitoring - Watching gauges, dials, or display screens to make sure a machine is working.
- Operation and Control - Using equipment or systems.
- Operations Analysis - Figuring out what a product or service needs to be able to do.
- Time Management - Managing your time and the time of other people.
- Equipment Maintenance - Planning and doing the basic maintenance on equipment.
- Learning Strategies - Using the best training or teaching strategies for learning new things.
- Repairing - Repairing machines or systems using the right tools.
- Troubleshooting - Figuring out what is causing equipment, machines, wiring, or computer programs to not work.
- Judgment and Decision Making - Thinking about the pros and cons of different options and picking the best one.
- Management of Financial Resources - Making spending decisions and keeping track of what is spent.
- Systems Analysis - Figuring out how a system should work and how changes in the future will affect it.
- Management of Material Resources - Managing equipment and materials.
- Active Listening - Listening to others, not interrupting, and asking good questions.
- Mathematics - Using math to solve problems.
- Monitoring - Keeping track of how well people and/or groups are doing in order to make improvements.
- Social Perceptiveness - Understanding people's reactions.
- Coordination - Changing what is done based on other people's actions.
- Negotiation - Bringing people together to solve differences.
- Arm-Hand Steadiness - Keeping your arm or hand steady.
- Memorization - Remembering words, numbers, pictures, or steps.
- Flexibility of Closure - Seeing hidden patterns.
- Manual Dexterity - Holding or moving items with your hands.
- Control Precision - Quickly changing the controls of a machine, car, truck or boat.
- Problem Sensitivity - Noticing when problems happen.
- Originality - Creating new and original ideas.
- Number Facility - Adding, subtracting, multiplying, or dividing.
- Gross Body Equilibrium - Keeping your balance or staying upright.
- Extent Flexibility - Bending, stretching, twisting, or reaching with your body, arms, and/or legs.
- Gross Body Coordination - Moving your arms, legs, and mid-section together while your whole body is moving.
- Speech Recognition - Recognizing spoken words.
- Sound Localization - Noticing the direction that a sound came from.
- Explosive Strength - Jumping, sprinting, or throwing something.
- Dynamic Strength - Exercising for a long time without your muscles getting tired.
- Far Vision - Seeing details that are far away.
- Glare Sensitivity - Seeing something even if there is a glare or very bright light.
- Time Sharing - Doing two or more things at the same time.
- Multilimb Coordination - Using your arms and/or legs together while sitting, standing, or lying down.
- Written Comprehension - Reading and understanding what is written.
- Deductive Reasoning - Using rules to solve problems.
- Mathematical Reasoning - Choosing the right type of math to solve a problem.
- Trunk Strength - Using your lower back and stomach.
- Visual Color Discrimination - Noticing the difference between colors, including shades and brightness.
- Speed of Limb Movement - Quickly moving your arms and legs.
- Speed of Closure - Quickly knowing what you are looking at.
- Perceptual Speed - Quickly comparing groups of letters, numbers, pictures, or other things.
- Finger Dexterity - Putting together small parts with your fingers.
- Selective Attention - Paying attention to something without being distracted.
- Fluency of Ideas - Coming up with lots of ideas.
- Peripheral Vision - Seeing something to your side when your are looking ahead.
- Dynamic Flexibility - Quickly and repeatedly bending, stretching, twisting, or reaching out with your body, arms, and/or legs.
- Auditory Attention - Paying attention to one sound while there are other distracting sounds.
- Static Strength - Lifting, pushing, pulling, or carrying.
- Wrist-Finger Speed - Making fast, simple, repeated movements of your fingers, hands, and wrists.
- Rate Control - Changing when and how fast you move based on how something else is moving.
- Information Ordering - Ordering or arranging things.
- Oral Comprehension - Listening and understanding what people say.
- Reaction Time - Quickly moving your hand, finger, or foot based on a sound, light, picture or other command.
- Oral Expression - Communicating by speaking.
- Written Expression - Communicating by writing.
- Inductive Reasoning - Making general rules or coming up with answers from lots of detailed information.
- Category Flexibility - Grouping things in different ways.
- Depth Perception - Deciding which thing is closer or farther away from you, or deciding how far away it is from you.
- Stamina - Exercising for a long time without getting out of breath.
- Night Vision - Seeing at night or under low light.
- Near Vision - Seeing details up close.
- Hearing Sensitivity - Telling the difference between sounds.
- Speech Clarity - Speaking clearly.
- Spatial Orientation - Knowing where things are around you.
- Response Orientation - Quickly deciding if you should move your hand, foot, or other body part.
- Visualization - Imagining how something will look after it is moved around or changed.
Average Education Attained
Highest level of education earned by people in this career.
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Content sourced from United States Department of Labor Employment and Training Administration ("DOLETA") and the Minnesota Department of Employment & Economic Development ("DEED")