A private investigator finds facts, documents them clearly, and presents them in a way a client, insurer, attorney, or court can trust. The work is about 80% research, interviewing, and report writing, and about 20% surveillance. This roadmap takes you from learning the legal and ethical ground rules, to being hireable at an investigations firm or insurance SIU, to specializing in areas like fraud, litigation support, or digital/OSINT work. Almost every US state requires a PI license, and rules vary widely, so your first job is to check your own state's requirements. Everything here uses free
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Every stage from beginner to expert, with lessons, practice drills, projects, interview questions and free resources. Free with a Rolearch account.
Stage 1 of 3 · about 10 weeks
Understand what investigators may and may not legally do, learn to find public information, and write a clear factual report.
Law, licensing, and ethics
One illegal act, such as pretexting for financial records, trespass, or illegal recording, can end your career and ruin a case. Knowing the rules protects you and makes your evidence usable in court.
Public records and database research
Most cases are solved at a desk. Locating a person, verifying identity, or checking assets starts with court, property, business, and licensing records.
Interviewing and active listening
Investigators get evidence by asking questions and noticing what is and is not said. Good interviews are calm, open-ended, and documented right away.
Report writing
Your report is your product. Clients, attorneys, and courts read it instead of watching you work. It must be factual, chronological, and free of opinion.
Observation and note-taking basics
Surveillance depends on patience, memory, and accurate logging far more than on equipment.
Then 2 more stages (about 60 weeks in all) with lessons, drills, projects, 6 interview questions with strong answers and free resources.