MO Private Investigator study guide
MO Private Investigator · Work through your exam, one topic at a time.
The Missouri private investigator credential is issued by the Board of Private Investigator and Private Fire Investigator Examiners, a board within the Missouri Division of Professional Registration. The board's office is at 3605 Missouri Boulevard, P.O. Box 1335, Jefferson City, MO 65102-1335; the telephone number is 573.522.7744 and the email is [email protected]. Staff are available 8:00 a.m. Topics on this exam: Investigative Principles and Practices, Missouri Statutes and Board Rules, Evidence, Reporting, and Case Documentation, and Professional Ethics and Business Conduct. The MO Private Investigator study guide has 4 sections and about 1,279 words.
01Investigative Principles and Practices
This domain tests whether you can run a lawful, client-focused investigation from intake to closure: defining scope, selecting the least intrusive method that answers the question, planning surveillance and interviews, and preserving what you learn. Missouri does not issue a state PI license, so your authority comes from the client's written engagement and general law, not a badge.
312 words, about 2 min02Missouri Statutes and Board Rules
This domain tests the legal framework around Missouri investigative work. The key fact: Missouri has no statewide private investigator license and no state PI board that issues credentials or rules.
334 words, about 2 min03Evidence, Reporting, and Case Documentation
This domain tests whether your file can survive a deposition: how you collect, preserve, and describe evidence; how you write reports; and how you handle corrections and retention. The exam favors contemporaneous, factual, attributable records over polished narratives written weeks later.
306 words, about 2 min04Professional Ethics and Business Conduct
This domain tests judgment: conflicts, confidentiality, lawful deception limits, fees, and client communication. Missouri does not impose a statewide PI ethics code, but you are bound by contract law, consumer-protection law (RSMo 407.020), privacy and wiretap statutes, and the expectations of attorneys who retain you as an agent.
327 words, about 2 min