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Private Investigation Course
More than 2 million learners worldwide

Private Investigation Course

This Private Investigation Course gives you the complete skill set to work as a professional PI — from surveillance and OSINT to evidence handling and report writing. You'll learn exactly how licensed investigators operate, what the law allows, and how to build a practice that holds up in court and with clients.

Dedika for businesses

What you will learn:

You will learn how to conduct surveillance legally, research subjects through public records and commercial databases, and gather evidence that meets courtroom standards. The course covers interviewing techniques, source development, and deception detection so you can get reliable information from real people. You will also learn how to write professional investigative reports and affidavits that attorneys and insurers can act on. Specialized modules address fraud, background checks, domestic cases, and corporate investigations. By the end, you will have the operational knowledge and business skills to work as a competent, ethical, and legally protected private investigator.

How you study in a practical way Private Investigation Course

How you practice Private Investigation Course

For companies who want to train their team

With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.

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Course content

8 Chapters • 40 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Private Investigation

  • Lesson 1 • Legal Framework and Licensing

    Covers licensing requirements, regulatory bodies, and operating within legal boundaries. Students learn how compliance protects both the PI and the client.

  • Lesson 2 • Privacy Law and Investigator Limits

    Introduces privacy rights, consent laws, and boundaries on data collection. Students understand what information can legally be gathered and how.

  • Lesson 3 • The Private Investigator's Role

    Defines what PIs do, who hires them, and how they differ from law enforcement. Anchors the chapter by establishing professional identity and scope.

  • Lesson 4 • Case Intake and Client Relations

    Covers client interviews, engagement agreements, and managing expectations. Proper intake prevents scope creep and legal exposure from the start.

  • Lesson 5 • Ethics and Professional Conduct

    Examines ethical obligations, conflicts of interest, and professional codes of conduct. Ethical grounding is essential before any fieldwork begins.

Chapter 2See details

Research and Records Investigation

  • Lesson 1 • Open Source Intelligence (OSINT)

    Introduces OSINT methodology for gathering intelligence from publicly available online sources. Students apply structured techniques to social media, news, and web data.

  • Lesson 2 • Database Research Techniques

    Teaches use of commercial investigative databases for locating individuals and assets. Students learn to evaluate data quality and cross-reference sources.

  • Lesson 3 • Court and Criminal Record Research

    Covers accessing civil, criminal, and bankruptcy court records at multiple levels. Students learn to read dockets and extract investigatively relevant information.

  • Lesson 4 • Public Records and Open Sources

    Identifies categories of publicly accessible records and how to retrieve them efficiently. Forms the foundation for all database and document research.

  • Lesson 5 • Organizing and Analyzing Research

    Teaches methods for structuring, linking, and analyzing collected data into actionable intelligence. Connects raw research to case strategy and reporting.

Chapter 3See details

Surveillance Fundamentals

  • Lesson 1 • Mobile Surveillance Techniques

    Develops vehicle and foot follow skills for tracking a moving subject without detection. Students learn to adapt to subject behavior and urban environments.

  • Lesson 2 • Surveillance Documentation and Reporting

    Covers real-time logging, video evidence standards, and writing surveillance reports. Accurate documentation transforms observations into admissible evidence.

  • Lesson 3 • Stationary Surveillance Techniques

    Teaches fixed-position observation methods, cover selection, and endurance strategies. Students practice maintaining covert positions for extended periods.

  • Lesson 4 • Legal Boundaries of Surveillance

    Establishes what surveillance activities are lawful and where legal exposure arises. Ensures students operate within consent and privacy law before entering the field.

  • Lesson 5 • Pre-Surveillance Planning

    Covers target research, location reconnaissance, and operational planning before deployment. Thorough planning reduces risk and increases surveillance success rates.

Chapter 4See details

Interviewing and Source Development

  • Lesson 1 • Deception Detection and Credibility Assessment

    Examines behavioral indicators of deception and methods for assessing statement credibility. Students apply structured analysis rather than relying on intuition alone.

  • Lesson 2 • Interview Planning and Preparation

    Covers pre-interview research, objective setting, and question design. Preparation directly determines the quality of information obtained.

  • Lesson 3 • Rapport Building and Communication

    Teaches verbal and nonverbal techniques for establishing trust and encouraging disclosure. Rapport is the primary tool for gaining voluntary cooperation.

  • Lesson 4 • Questioning Techniques and Elicitation

    Introduces open, closed, and elicitation questioning methods for different interview goals. Students learn to probe without alerting or alienating the interviewee.

  • Lesson 5 • Developing and Managing Sources

    Covers identifying, cultivating, and maintaining confidential human sources over time. Ethical source management protects both the PI and the informant.

Chapter 5See details

Evidence Collection and Handling

  • Lesson 1 • Evidence Storage and Case File Management

    Establishes secure storage practices and case file organization from intake to closure. Proper management supports both ongoing investigations and future legal proceedings.

  • Lesson 2 • Digital Evidence Fundamentals

    Introduces methods for identifying, preserving, and handling digital evidence without alteration. Students learn when to involve forensic specialists and how to support them.

  • Lesson 3 • Evidence Types and Legal Standards

    Defines categories of evidence and the admissibility standards PIs must meet. Understanding legal thresholds prevents evidence from being excluded in proceedings.

  • Lesson 4 • Photography and Video Evidence

    Teaches technical and procedural standards for capturing photographic and video evidence. Proper technique ensures images are clear, timestamped, and legally defensible.

  • Lesson 5 • Chain of Custody Procedures

    Covers documentation, labeling, and transfer protocols that preserve evidence integrity. A broken chain of custody can invalidate otherwise strong evidence.

Chapter 6See details

Report Writing and Case Documentation

  • Lesson 1 • Testifying as a Witness

    Prepares students to present investigative findings effectively in depositions and court proceedings. Credible testimony depends on thorough documentation and composed delivery.

  • Lesson 2 • Principles of Investigative Writing

    Establishes the core standards of accuracy, objectivity, and clarity in investigative writing. Students distinguish factual reporting from opinion and inference.

  • Lesson 3 • Structuring Investigation Reports

    Teaches standard report formats including executive summaries, chronologies, and findings sections. Consistent structure makes reports usable by attorneys, insurers, and courts.

  • Lesson 4 • Affidavits and Legal Declarations

    Introduces the structure and language of sworn affidavits and declarations used in legal proceedings. Students learn what PIs can and cannot attest to under oath.

  • Lesson 5 • Surveillance Report Writing

    Covers the specific format and language standards for surveillance activity reports. Students learn to describe observations precisely without embellishment or omission.

Chapter 7See details

Specialized Investigation Types

  • Lesson 1 • Background Investigations

    Teaches comprehensive background checks for employment, tenant, and due diligence purposes. Students apply records research and interview skills within consumer protection law limits.

  • Lesson 2 • Process Serving and Skip Tracing

    Covers locating evasive subjects and legally serving legal documents. Students learn skip tracing techniques and proper service documentation procedures.

  • Lesson 3 • Domestic and Family Investigations

    Addresses infidelity, child custody, and missing person cases with heightened ethical sensitivity. Students balance client needs with legal limits and emotional complexity.

  • Lesson 4 • Corporate and Workplace Investigations

    Covers internal theft, employee misconduct, and intellectual property investigations in business settings. Students learn to work within corporate structures and HR protocols.

  • Lesson 5 • Insurance and Workers' Compensation Fraud

    Covers investigation of fraudulent claims through surveillance, records research, and witness interviews. Students learn to document activity that contradicts claimed injuries or losses.

Chapter 8See details

Business Operations and Case Management

  • Lesson 1 • Risk Management and Professional Liability

    Addresses insurance, errors and omissions coverage, and risk mitigation strategies for PI firms. Students identify operational risks before they become legal or financial problems.

  • Lesson 2 • Pricing, Billing, and Contracts

    Teaches fee structures, retainer agreements, and billing practices for investigative services. Clear contracts prevent disputes and ensure timely payment.

  • Lesson 3 • Starting and Structuring a PI Business

    Covers business entity selection, licensing compliance, and office setup for a PI practice. Proper structure limits personal liability and satisfies regulatory requirements.

  • Lesson 4 • Subcontracting and Team Operations

    Covers hiring, briefing, and managing subcontract investigators for larger or multi-location cases. Students learn supervisory responsibility and quality control over subcontractors.

  • Lesson 5 • Case Management Systems

    Introduces tools and workflows for tracking active cases, deadlines, and deliverables. Systematic case management prevents errors and supports multiple concurrent investigations.

Certification

Your valid completion certificate

This course is for you:

  • Career changers: seeking a structured path into investigative work.

  • Security professionals: wanting to expand into licensed PI services.

  • Paralegals: looking to strengthen case-support skills for law firms.

  • Entrepreneurs: ready to launch an independent investigative practice.

  • Military veterans: translating fieldwork instincts into civilian PI careers.

  • Insurance adjusters: aiming to handle fraud investigations independently.

What our students say

Your classes are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...
Giulio Carlo
Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can switch chapters and skip content I don't need.
Mariana Ferres
Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!
Luciana Alvarenga
Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos really help with learning.
André Felipe
André FelipePrompt Engineering Student

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