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Investigator Course
More than 2 million students worldwide

Investigator Course

4.7

Master the full investigative process — from planning and evidence collection to analysis and final reporting. This course gives you the practical skills, legal knowledge, and professional standards required to conduct credible, defensible investigations across public and private sector roles.

Dedika for businesses

What you will learn:

You will learn how to plan and scope investigations, collect and preserve physical and digital evidence, and conduct structured interviews with witnesses and subjects. The course covers surveillance techniques, open source intelligence research, and financial crime analysis. You will develop analytical skills to evaluate evidence, identify patterns, and build logical case narratives. You will also learn how to produce professional investigation reports and present findings to stakeholders and legal bodies. Advanced topics include digital forensics, fraud investigation, undercover operations, and emerging investigative technologies.

How you study in practice Investigator Course

How you practise Investigator Course

For businesses looking 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 • 39 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Professional Investigation

  • Lesson 1 • The Investigator's Role and Mandate

    Defines the scope, purpose, and professional identity of an investigator. Anchors all subsequent skills in a clear understanding of the job's core mission.

  • Lesson 2 • Case Management Fundamentals

    Introduces basic case file structure, documentation habits, and workload organisation. Establishes disciplined record-keeping from the outset of training.

  • Lesson 3 • Ethics and Professional Conduct

    Examines ethical principles such as objectivity, confidentiality, and impartiality. Builds the moral foundation required for credible and defensible investigations.

  • Lesson 4 • Legal and Regulatory Boundaries

    Covers the legal framework governing investigative activity, including privacy rights and lawful authority. Prevents unlawful conduct that could compromise cases.

Chapter 2See details

Planning and Scoping an Investigation

  • Lesson 1 • Defining Investigation Objectives

    Guides students in translating allegations into specific, measurable investigative questions. Clear objectives prevent scope creep and focus resource use.

  • Lesson 2 • Building the Investigation Plan

    Synthesises objectives, resources, and timelines into a written investigation plan. The plan serves as the operational blueprint throughout the case.

  • Lesson 3 • Managing Confidentiality During Planning

    Addresses information-sharing controls and need-to-know principles at the planning stage. Prevents premature disclosure that could compromise the investigation.

  • Lesson 4 • Receiving and Assessing Allegations

    Covers intake procedures for complaints, referrals, and self-initiated cases. Connects allegation assessment to the decision of whether and how to investigate.

  • Lesson 5 • Resource and Risk Assessment

    Examines how to estimate time, personnel, and budget needs while identifying operational risks. Ensures investigations are feasible and safely planned.

Chapter 3See details

Evidence Collection and Preservation

  • Lesson 1 • Types and Classification of Evidence

    Distinguishes direct, circumstantial, physical, digital, and testimonial evidence. Classification guides collection priorities and admissibility considerations.

  • Lesson 2 • Digital Evidence Acquisition

    Introduces forensically sound methods for capturing electronic data without alteration. Connects digital acquisition to chain-of-custody requirements.

  • Lesson 3 • Chain of Custody Management

    Establishes procedures for tracking evidence from collection through final disposition. A documented chain of custody is essential for evidential credibility.

  • Lesson 4 • Scene Assessment and Documentation

    Teaches systematic scene examination, photography, sketching, and note-taking. Accurate scene documentation prevents loss of perishable evidence.

  • Lesson 5 • Physical Evidence Handling

    Covers collection, packaging, labelling, and transport of physical items. Proper handling prevents contamination and supports admissibility.

Chapter 4See details

Interviewing Witnesses and Subjects

  • Lesson 1 • Interview Planning and Preparation

    Covers pre-interview research, objective setting, and logistical preparation. Thorough preparation increases information yield and reduces interviewer error.

  • Lesson 2 • Structured Interview Techniques

    Introduces evidence-based models such as cognitive and structured interviewing. These frameworks maximise recall accuracy and minimise suggestibility.

  • Lesson 3 • Rapport Building and Communication

    Teaches verbal and non-verbal techniques for establishing trust with interviewees. Rapport reduces resistance and encourages candid disclosure.

  • Lesson 4 • Interviewing Subjects Under Caution

    Addresses rights notifications, caution requirements, and interview conduct for subjects. Ensures compliance with procedural safeguards that protect evidential value.

  • Lesson 5 • Recording and Documenting Interviews

    Covers audio, video, and written recording methods and their respective standards. Accurate records preserve the interview for review, disclosure, and proceedings.

Chapter 5See details

Surveillance and Observation Techniques

  • Lesson 1 • Technical Surveillance Methods

    Introduces lawfully authorised technical tools including cameras, trackers, and audio devices. Technical methods extend surveillance capability beyond direct observation.

  • Lesson 2 • Static Surveillance Operations

    Teaches fixed-position observation planning, cover selection, and log maintenance. Static surveillance provides sustained monitoring of a specific location.

  • Lesson 3 • Surveillance Documentation and Reporting

    Establishes standards for logging observations, timestamping media, and compiling surveillance reports. Accurate documentation converts raw observation into usable evidence.

  • Lesson 4 • Legal Framework for Surveillance

    Establishes the legal boundaries, authorisation requirements, and privacy considerations for surveillance. Prevents unlawful observation that would render evidence inadmissible.

  • Lesson 5 • Mobile Surveillance Techniques

    Covers foot and vehicle follow techniques, team coordination, and anti-surveillance awareness. Mobile surveillance tracks subject movement across changing environments.

Chapter 6See details

Open Source and Records Research

  • Lesson 1 • Open Source Intelligence Principles

    Introduces OSINT concepts, source evaluation, and research ethics. Establishes a disciplined approach to open-source research that avoids unreliable or unlawfully obtained data.

  • Lesson 2 • Social Media and Online Investigation

    Teaches lawful collection of social media content, profile analysis, and digital footprint mapping. Online investigation reveals behavioural patterns and associations not found in formal records.

  • Lesson 3 • Financial and Asset Research

    Introduces open-source methods for identifying assets, beneficial ownership, and financial relationships. Asset research supports fraud, corruption, and proceeds-of-crime investigations.

  • Lesson 4 • Public Records and Database Research

    Covers access to corporate, property, court, and government records. Public records provide verified background data that corroborates or challenges subject information.

  • Lesson 5 • Synthesising and Verifying Research

    Teaches cross-referencing multiple sources to verify findings and resolve contradictions. Verified synthesis transforms raw data into reliable investigative intelligence.

Chapter 7See details

Analysis, Inference, and Case Building

  • Lesson 1 • Financial and Transaction Analysis

    Covers tracing fund flows, identifying anomalies, and interpreting financial records. Financial analysis is central to fraud, corruption, and asset-recovery cases.

  • Lesson 2 • Evaluating Evidence Strength

    Establishes criteria for assessing the reliability, relevance, and evidential weight of each exhibit. Evaluation of the evidence determines what can be asserted and the degree of confidence in those assertions.

  • Lesson 3 • Constructing the Case Narrative

    Guides students in assembling evidence into a coherent, logical narrative that addresses all key issues. A well-constructed narrative is the foundation of the final report.

  • Lesson 4 • Analytical Thinking for Investigators

    Introduces structured analytical thinking, cognitive bias awareness, and hypothesis testing. Analytical discipline prevents premature conclusions and confirmation bias.

  • Lesson 5 • Link and Network Analysis

    Teaches mapping relationships between people, entities, and events using link charts. Network analysis reveals hidden connections and organisational structures.

Chapter 8See details

Investigation Reporting and Outcomes

  • Lesson 1 • Quality Assurance and Peer Review

    Covers internal review processes, fact-checking, and supervisor sign-off procedures. Quality assurance catches errors before reports reach decision-makers or legal proceedings.

  • Lesson 2 • Presenting Findings to Stakeholders

    Develops skills for briefing managers, legal counsel, and oversight bodies on investigation outcomes. Effective oral presentation complements the written report.

  • Lesson 3 • Principles of Investigative Report Writing

    Establishes standards for objectivity, accuracy, clarity, and structure in written reports. Report quality directly affects the credibility and utility of investigative findings.

  • Lesson 4 • Post-Investigation Actions and Closure

    Addresses referrals, disciplinary actions, remediation recommendations, and case closure procedures. Proper closure ensures accountability and organisational learning.

  • Lesson 5 • Drafting the Investigation Report

    Walks through each section of a formal investigation report from executive summary to appendices. Structured drafting ensures completeness and logical flow.

Certification

Your valid completion certificate

This course is for you:

  • HR professionals: handling workplace misconduct cases without formal investigative training.

  • Compliance officers: needing structured methodology to manage internal inquiries confidently.

  • Security managers: responsible for incident investigations across corporate or institutional settings.

  • Law enforcement veterans: transitioning into private sector or regulatory investigative roles.

  • Fraud analysts: looking to formalize their skills with a complete investigative framework.

  • Career changers: drawn to investigative work from legal, military, or audit backgrounds.

What our students say

Your lessons are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of interest without needing to change platforms... I'm grateful 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 change 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!
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Luciana AlvarengaNail Design Student
The platform is fast and simple to use. The diversity of content and complementary videos really help with learning.
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André FelipePrompt Engineering Student

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